>> that could be a mexican plane up there, they're getting ready to attack. >> plus, bernie sanders cannot stand hillary clinton. >> senator bernie sanders responds to that charge here tonight. then -- the ugly attacks on elizabeth warren continues. >> i have more native american blood in me than she does, okay? >> tonight donald trump's long history of profiling native americans. >> they don't look like indians to me and they don't look like indians to indians. >> and the clear and present danger of climate change in miami. >> i suppose for our great, great grandkids, this will be a great snorkeling site. >> our special report from florida when "all in" starts right now. good evening from new york, i'm chris hayes, and for the very first time in this long campaign, donald trump is acting like a man who knows he's losing. he just doesn't know why. >> the crowds are massive. and i walked out of one and said, i don't see how i'm not leading. you see the crowds, we have thousands of people standing outside trying to get in. and they're great people, and they have such spirit for the country and love for the country and i'm saying, why am i not doing better in the polls? and i've noticed the polls are coming up, but you have to understand, your show, no, but many shows it's a constant hit from mainstream media no matter what you do, it's always a negative. >> trump is not seeing significant signs of improvement in the polls. nine of the past ten polls show hillary clinton with a lead over trump by about five points. politico's battle state polling average, of 11 key states, trump trailed 45-39. for a candidate whose campaign is centered on the idea that he's a winter, who spent so much time trumpeting polls leading his gop rivals, those numbers have got to hurt. a lot. the problem, he appears to lack of discipline to reverse them. consider this comment this afternoon. >> mexico, and i respect mexico and their leaders, what they've done to us is incredible. their leaders are so much smarter, so much sharper and it's incredible -- in fact, that could be a mexican plane up there, they're getting ready to attack. >> trump's antics aren't the only problem. seemingly every day brings a new revelation about his shady past. we know the trump institute, which for the record isn't separate from trump university, offered students get rich schemes with plagiarized lessons. >> i think it's important that you attend. you're going to learn a lot in the seminars, from the institute, about the institute. and you're going to meet a lot of interesting people. it's a great place to meet people. and they're sort of like you, they're smart, they're intelligent. in some cases they're beautiful or good looking. >> trump doesn't blame himself for his woes, of course. he's put a lot of the blame on the republican party. complaining yesterday that it's almost in some ways like i'm running against two parties. and there's certainly no denying the prominent republicans have kept their distance. consider what utah senator mike lee said yesterday, when asked why he hasn't yet endorsed trump. a response that kicked off with allusion to trump's comments about ted cruz's dad. >> i just don't understand why you're not out there trumpeting trump. >> hey, look, steve, i get it. you want me to endorse trump. >> i don't understand why you're not, really. >> well, we can get into that if you want. we can get into the fact that he accused my best friend's father of conspiring to kill jfk. >> fair point. but the biggest problem for trump in the general election isn't people like mike lee, it's that trump managed to win the republican primary without a real campaign, no staff, no advertising, no ground game. and now, in the final hours, relatively, he's desperately trying to cobble one together, despite lacking the wherewithal or expertise to do so. trump gave a speech on trade in pittsburgh, his pennsylvania campaign is yet reportedly missing in action. local party leaders saying there's been almost no outreach from his campaign so far. nowhere is trump's desperation more apparent than in his fundraising. he started the month of june with $1.2 million in cash on hand compared with clinton's $42 million. the next campaign finance report is set to come out right in the middle of the republican national convention. and another dismal report would be a disaster. that reporting period closing tomorrow, or today i think. the trump campaign is spamming facebook feeds with ads promising "make america great again" and begging people to donate before midnight. the campaign seems to have bought e-mail lists to reach donors and has in recent days asked for money from lawmakers in the uk, iceland, australia and elsewhere, prompting complaints it's violating federal law by soliciting funds from foreign nationals. and there's the possibility trump may be cashing himself out. he said last week, he had forgiven a $50 million campaign loan, converting it into a donation, but trump won't release proof that he did that. and the s.e.c. has posted no record as of yet of trump converting his loans to donations. if trump has yet to forgive the loan, it means he could use the incoming donations to pay off his investment in the campaign. trump says not to worry, the very dishonest nbc news seems to refuse to accept the fact i have forgiven the $50 million loan to my campaign today. done deal, he tweetded, exclamation. rick wilson joining us, who opposes donald trump. josh marshall has been putting out this theory and i basically buy it. there was no fundraising operation to speak of. they didn't build lists and cultivate donors. that s.e.c. report comes out a disaster and then it's like the college student who's got a term paper due in two hours, who hasn't done any research, grabbing stuff off wikipedia, so you're just getting this barrage of every e-mail list they can buy, trying to raise money desperately. >> that's about right, chris. because, look, their major donor fundraising effort is dead in its tracks. they have a couple of major donors who have agreed to help them, but when you see the invitations, they're $25,000 ahead of what they could raise, which is almost $400,000 if you spread it across all the committees. he's not raising large, significant money, so he has to go to the online option. the folks that are doing his online fundraising are using all the usual tricks of the online fundraising trade, the countdown clocks, the matching lines, all these things. but they're not ab-testing the lists. they seem to be random. they've got a lot of rejection rates coming back. about 60% of them were getting kicked into spam folders because they used the wrong domain name for his fundraising. so you're seeing him scramble to try to raise money on the back end of this process. and unfortunately, even for e-mail, you have to cultivate a list. you have to work it, develop it, figure out what -- you a-b test it to figure out what works. and eric trump is claiming $11 million, which would be larger than any other week for anyone, including barack obama, or bernie sanders, both of whom have well tested and thought out fundraising list and can generally turn out a good amount of money from them. so he's in deep water fundraising wise. >> what do you make of this? i'm inclined to believe that he's going to file with the s.e.c. that he's turning the loan into a donation. but if they had filed that, this is a guy who will say he would give a million dollars to veterans groups and didn't until a reporter called. i guess we'll find out in the next reporting period, right? >> i think the answer is going to be whether or not trump is able to extend one of his credit lines. because he probably doesn't have that much cash to actually spend. this is a guy whose obligations are pretty significant, and so his cash position, some of the estimates were that his cash position was around $130 million at the outer boundary. so if he's taking 55 and converting it into a loan, that's going to sting. he's got to have the expectation that he's got an extension on his credit line somewhere. and that will probably be the deciding factor on whether or not he keeps that money as a loan or an obligation. >> it feels -- it's like the final dark act of a mammoth play right now. rick wilson, thanks for being here. i appreciate it. joining me now, the contributing editor for "rolling stone" magazine. what i think is fascinating, this guy has operated his entire career without having to show his work, bank account or ledger. now he's up against s.e.c. reports. you can't play three-card monty with the s.e.c. reports. >> right. but i would pump the brakes a little bit on making too much of the fact that he's not raising a ton of money. in some ways that could be construed as a positive by the people who vote for donald trump. his whole platform is based on the idea that he's not out there soliciting $400,000 donations. so the fact that he's not getting lots of donations, he can turn that into a positive. >> we had a conversation about how many people would tell you he's not in the pocket of big money. but it seems to me, he risks getting caught in the worst possible position, desperately trying to raise money, but not raising enough. >> and of course the reality of running for president in this country, if he doesn't have enough money to do it on his own, he's going to have to raise money from somewhere, and probably he's not going to be able to do it the way that bernie sanders did it, through a gigantic, massive, nationwide, you know, grassroots organization. >> cultivated, sophisticated, gone to over again. >> there is no political organization in the trump campaign. there's no war room or nerve center. the trump campaign is donald trump. it was so funny for him to talk about how, i look at all these crowds and i wonder why i'm not winning. it's a perfect metaphor. he doesn't have a ground game. it's all up in his own head. at some point, you have to do more than tweet and speak, probably, to win an election. >> you did a great piece on the ground with the campaign rallies in iowa. i want to play you this moment from manchester, new hampshire. take a listen. >> why aren't we putting our retiree, our military retirees on that board or in tsa? get rid of all these heeby jobbies they wear at tsa. i've seen them myself. we need the veterans in there. they've fought for this country and defended it. they'll still do it. >> you know, and we are looking at that. we are looking at a lot of things. >> i think that woman was mangling the reference of the muslim women who wear the headscarf. >> and that was very different from the sort of mccain moment from the 2008 campaign where he confronted somebody who said something ignorant like that. trump of course is never going to do that. but you know what, he's doing what he's doing, and it looks like a dumpster fire right now and the media is making a huge deal of what a mess his campaign is, but 45-39, considering how crazy his campaign is, isn't that bad. mike dukakis was ahead 17 points at this point. >> you raise a point, this guy has done in the last six weeks, everything wrong you could possibly do and he's at the floor, which is basically 40%. >> right. >> 40% is a very high floor. people have to remember the way elections work in this country. if you got nominated from one of the two parties, you'd have 40%. >> actually, i doubt it. i think donald trump, the fact that is, his support is insoluble. and one of few events, in one way or other, a terrorist attack, something going on with one of hillary's scandals, as bad as it looks right now, it's still within reach. >> important point. matt, thank you for your time. still to come, donald trump's ugly attacks on elizabeth warren. tonight, his history of profiling native americans. unbelievable footage ahead. but first, vice president biden drops a bombshell, saying that bernie sanders told him he would endorse hillary clinton. i'm going to ask senator sanders about that claim next. let's feed him to the sharks! squuuuack, let's feed him to the sharks! yay! and take all of his gold! and take all of his gold! ya! and hide it from the crew! ya...? squuuuack, they're all morons anyway! i never said that. they all smell bad too. no! you all smell wonderful! i smell bad! if you're a parrot, you repeat things. it's what you do. if you want to save fifteen percent or more on car insurance, you switch to geico. it's what you do. squuuuack, it's what you do. ♪ (vo) you can pass down a subaru forester. 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(vo) but you get to keep the memories. love. it's what makes a subaru, a subaru. for three days in a row now, ever since he gave a scripted policy speech, the presumptive republican presidential nominee donald trump has been focusing more than ever on one issue -- trade. pretty clear the trump campaign thinks this is the best issue they have. trump has criticized hillary clinton being married to the man who signed nafta and for being less than convincing in her opposition to tpp. trump says he agrees with bernie sanders on trade, trying to drive a wedge between bernie sanders supporters and hillary clinton. >> i have to say one thing about bernie, and he'll be nasty, but i know what he thinks inside. he hates her. he hates her. you wouldn't think this, but there is one thing that bernie sanders and i are in complete accord with, and that's trade. he said we're being ripped off, i say we're being ripped off. i've been saying it for years, he's been saying it for years. >> who better to respond to that than bernie sanders. number one, donald trump says, whatever you say, you hate hillary clinton, is that true? >> i know, he has read my mind. what a man, what a genius. no, the answer is of course, trump is lying as he always does. no, i do not hate secretary clinton, i've known her for 25 years. i have a lot of respect for her. we've worked together. we have disagreements on issues, but to say i hate her is absolutely untrue. >> i know, he has read my mind. what a man, what a genius. no, the answer is of course, trump is lying as he always does. no, i do not hate secretary clinton, i've known her for 25 years. i have a lot of respect for her. we've worked together. we have disagreements on issues, but to say i hate her is absolutely untrue. >> and the second thing, i can only imagine how interesting you find this, all of a sudden, donald trump, great crusader for better trade practices, the great hope for working america, he says he's just picking up your mantel, you guys agree entirely, what say you to that? >> well, is this before or after his companies manufacturing clothing in bangladesh and in china and in other low-wage countries? he's now come to the conclusion that our trade policies are failing. the truth is, you know, for many, many years, what i have understood, what i think most workers in this country have understood, what environmentalists have understood is that, in fact, our trade policies, from nafta, pntr with china, to the tpp, these do not benefit the middle class and working families. what they have done to a significant degree have enabled large corporations to shut down in this country, throw american workers on the street and move to low-wage nations. and by the way, chris, in addition, it's led to a race to the bottom, where workers are often given the choice of taking cuts in pay or health care or seeing their factories move abroad. i think we have to rethink in a fundamental way, our unfettered free trade policies and move to fair trade policies. >> i want to talk about tpp, particularly as it pertains to the platform. before that, we have a tweet from rachel martin, who said in an interview conducted with vice president biden, he said, i've talked to bernie, bernie is going to endorse her, her being hillary clinton. is this true? >> i talked to joe, i think it was three weeks ago. look, on that issue, we are trying to work with secretary clinton's campaign on areas that we can agree on, where the people who supported me, 12, 13 million votes, and what they want to see, whether it is on making moving toward making public colleges and universities tuition-free, or moving aggressively in health care and moving toward a universal health care system, those are the issues that we're working with secretary clinton on now and i hope we can be successful. >> but there is a difference. you've made a distinction between voting and endorsing, right? and we've seen, for instance, elizabeth warren, who did not endorse during the primary. she has endorsed and that's not just i'm going to vote for hillary clinton. she's been on the stump, praising her. is that something that you can see yourself doing, or is it just the case that you're never going to come to enough policy agreement with hillary clinton that you will ever be in that position? >> well, chris, let me back it up, by saying, i'm going to do everything that i can to defeat donald trump. i think for a variety of reasons. number one, he's a pathological liar. that's not a good quality to have in a president. number two, he wants to give hundreds of billions of dollars in tax breaks to the top 2/10 of 1% by repealing the estate tax. he thinks that climate change is a hoax. and most importantly, we cannot have a president who goes around insulting mexicans, latinos, muslims, women and african americans. that's outrageous. so i'm going to do everything that i can to see that donald trump is defeated. >> what if "everything i can" means going to rallies and doing the kind of thing that is standard part of endorsing a party nominee? is that in that category of "everything you can"? >> as i've just said, it's not great secret. we're trying to do everything we can right now to make the democratic platform, the most progressive platform in the history of the democratic party and we're having good success. i want to see that continue as the full committee meets in orlando. we are working, as we speak, we are working with the clinton campaign, trying to be able to come forward and say to my supporters out there, you know what, here's the progress that we have made. hear what secretary clinton is saying on this issue and that issue that means a whole lot to you. so i hope we can reach that goal. we are not there at this moment. >> okay, one issue outstanding and what i'm hearing from you is basically the platform is very important to you, it's a commitment of where the democratic party's at, you feel you've made progress. opposition to the death penalty is a pretty big change for the democratic party. >> that's right. wall street. we got language in there that would call for the break-up of banks and the re-establishment of glass-steagall. that's a pretty big deal. >> so there have been victories. one area that was defeated was an anti-transpacific partnership plank in the platform. and "the washington post" says, it seems credible. they said -- is that an accurate characterization of what happened between you and the president? >> well, i don't want to talk about a discussion that i had with the president. it's not great secret that president obama who i am very fond of, i have worked with him and supported him on so many issues and i think this country will owe him a deep debt of gratitude when he leaves office for all that he has accomplished. on this issue, we have a fundamental disagreement. i think tpp is a continuation of disastrous trade policies of the past and i'm not just -- this is not just bernie sanders, this is every trade union in america, virtually every environmental group, groups like doctors without borders, who understand that tpp will mean higher prescription drug costs for some of the poorest people in the world, who will die because they can't get the generic medicine they need. so i am very strongly opposed to the tpp. and in a democratic society, people can have differences of opinion. a united states senator can disagree on an issue with the president. >> i'm going to ask you one more time on this biden quote. he said you talked to him and you said you would endorse hillary clinton. is joe biden telling the truth, or is this a loose interpretation of what you said? >> well, joe and i talked about three weeks ago and i said, right now, my hope is that we can reach an agreement on some very important issues and i can go forward to the millions of people who supported me and say, look, this is the progress we've made, this is where we're going to go as a country. so i hope it happens. as of this moment, we're not there quite yet. >> all right, senator bernie sanders, thank you for your time tonight. i appreciate it. >> thank you, chris. up next, donald trump tells his surrogate not to apologize for his offensive gesture at a rally. now there's more than a few problems with trump's reasoning, but one in particular we think you will want to hear. i will explain after this short break. to unblock naturally, so you have peace of mind from start to finish. love your laxative. miralax. try phillips' fiber good gummies plus energy support. there's a more enjoyable way to get your fiber. it's a fiber supplement that helps support regularity, and includes b vitamins to help convert food to energy. mmm, these are good! nice work phillips'. the tasty side of fiber, from phillips. i heard hillary clinton and elizabeth warren campaigning. you know elizabeth warren, right? >> talk radio personality howie carr adopting the offensive cry that's been used to mock elizabeth warren over her claim to native american heritage. critics say she made up that claim to gain an unfair advantage when applying to teach law at harvard and the university of pennsylvania. warren has never documented the lineage but says it's a long-passed down family lore. both schools have said it was not a factor in her hiring. but trump has taken up that line, referring to her as pocahontas. and howie carr, trump urged carr to defy the outrage over his performance. >> jimmy the greek is a commentator for cbs sports who losts in job in 1998 over comments that were deemed racially insensitive. >> the black is is the better athlete and he's bred to be the better athlete because this goes back during the civil war. during the slave trading, the slave owner would breed his big black to his big woman, so that he could have a big, black kid. >> his real mistake, according to trump was apologizing. trump returned to the theme of elizabeth warren's heritage in an interview this morning, repeating the debunked claim that it helped her get hired. >> she used her native american, so-called phony native american status to get into institutions and to help her career, and i always say that i have more native american blood in me than she does, okay? and i bet you do too. >> it turns out, this was not the first time trump claimed himself an expert on who is and is not a native american. >> they don't look like indians to me, and they don't look like indians. maybe we say politically correct or not politically correct, they don't look like indians to me and they don't look like indians to indians. >> back story to that statement, next. our citracal bones. easily absorbed calcium plus vitamin d. defy bone aging with citracal maximum. our highest level of calcium plus d. you owned your car for four years, you named it brad. you loved brad. and then you totaled him. you two had been through everything together. two boyfriends, three jobs... you're like nothing can replace brad. then liberty mutual calls, and you break into your happy dance. if you sign up for better car replacement™, we'll pay for a car that's a model year newer with 15,000 fewer miles than your old one. see car insurance in a whole new light. liberty mutual insurance. hello welcome to holiday inn. running our own business, we've been traveling a lot. a hotel looking to help small businesses succeed is incredible. thank you. holiday inn is an extension of our team. book your next journey at holidayinn.com 4 by 4 those who jump start the weekend. thank you. holiday inn is an extension of our team. the one's who want to see it all... hear it all... and feel it all... all summer long. ♪ jeep renegade -- it's how we live 4 by 4 summer. ♪ or if you're young or old.are if you run everyday, no matter who you are a heart attack can happen without warning. if you've had a heart attack, a bayer aspirin regimen can help prevent another one. be sure to talk to your doctor before you begin an aspirin regimen. bayer aspirin. in 1993 donald trump's gambling empire was on shaky ground. three casinos in atlantic city had emerged from bankruptcy and a year before tough new competition arrived on the scene. foxwood's from nearby connecticut. native americans don't pay taxes on casinos on their land. in 1993, trump sued the government alleging the law gave an unfair advantage to a certain class of citizens. he was called to testify and he got into a heated exchange when congressman george miller, democrat from california. >> is this you discussing indian blood? we're going to judge people by whether they have indian blood, whether they're qualified to run a gaming casino or not? >> that probably is me, absolutely. because if you look at some of the reservations that you've approved, you, sir, in your great wisdom have approved, i will tell you right now, they don't look like indians to me, and they don't look like the indians, maybe we say politically correct or not, but they don't look like indians to me and they don't look like indians to indians and you're talking about how tough and rough it is to get approved, but you go up to connecticut and you look, they don't look like indians to me, sir. >> thank god that's not the test of whether or not people have rights in this country, whether or not they pass your look test. >> depends whether or not you're approving it. >> it's not a question of whether i'm approving it. do you know in the history of this country where we've had this discussion before? they don't look jewish to me. they don't look indian to me. they don't look italian to me. and that was a test for whether people could go into business, or not go into business, whether they could get a bank loan, you're too black, you're not black enough. >> well, you're approving for indian, why don't you approve it for everybody. if your case is non-discriminatory, why don't you approve for everybody? you're saying only indians can have the reservation, only indians can have the gaming. so why aren't you approving it for everybody? why are you being discriminatory? why is it the indians don't pay tax but everybody else does? i do. >> that exchange to me was so striking because this has been the whole -- he seems obsessed with this shtick for the last few weeks, about he is the great determiner of who has what ancestry. >> yeah, this is not a new script at all. in many ways, native people have historically served as the canary in the coal mine in regards to racial relations. this is no different, where you see him performing exactly the same shtick amongst our muslim brothers and sisters, and as well as hispanic americans. obviously now he's the authority on native ancestry and native authenticity in regards to elizabeth warren. the truth is that as the editor of indian country today media network and as somebody who works within many of our communities and social media as well, that i've never seen donald trump in any of our communities. and so it's preposterous, it's stupid, it's trumponian in its scope that he's making assertions that somehow he's an authority. >> it also is the case, you see in this committee, in the story of his casinos doing bad in atlantic city, because these people got something, kind of the story of the whole grievance that he personally seems animated by, that has expanded out to so many groups, as you listen to how he campaigns. >> it's absolutely amazing. the united states government, as a matter of documented historical fact, kidnapped native children and had a policy of kill the indian, save the man. the united states government killed our food supply so they could wage all-out war against our communities many times. the united states government through the ihs, the indian health service forcefully performed tubl lyingations on native women, but it was the wealthy white man being picked on and discriminated against according to this lawsuit. >> what is your feeling, as someone active in your particular community, watching the rise of this figure? particularly the fact that he has this guy doing a war whoop in introducing him, but the way that he sort of talked about so many different groups. >> well, it's not a surprise. and i think that we have to be very clear that donald trump is just a symbol for an antiquated, outdated mode of thought that unfortunately still exists and is still very prominent. it was prominent enough to -- sometimes we feel like we're picking on donald trump for having these outlandish positions and we talk about him every single day, and it seems like he's such an easy target, but the truth is that he is running for president. he is the republican nominee. and so that means there are people who legitimately believe in this man's platform, this hateful nonsense that he espouses. >> thank you very much. really appreciate it. >> thank you very much. still to come, we've shown you the real dangers of climate change threatening two remote areas of the country. tonight we take you to miami, the effects we found right in the streets and you do not want to miss that report. up on time. then i found aleve pm. the only one to combine a sleep aid plus the 12 hour pain relieving strength of aleve. now i'm back. aleve pm for a better am. romantic moments can happen spontaneously, so why pause to take a pill? 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[ animal sounds ] >> what in the world is making all those bizarre noises deep in the arctic ocean? the answer, in 60 seconds. there's a more enjoyable way to get your fiber. try phillips' fiber good gummies plus energy support. it's a fiber supplement that helps support regularity, and includes b vitamins to help convert food to energy. mmm, these are good! nice work phillips'. the tasty side of fiber, from phillips. >> we have no idea what on earth was making the incredibly loud, haunting sounds that our gopro microphone picked up in the arctic ocean on may 1st. we asked oceanographer with the university of washington to tell us. >> so the first sounds you're hearing, the crunching sounds, are someone walking on the ice. and in the background are low frequency moons of a bowhead whale song, and now a bearded seal. and at the same time, you hear this whoop whoop of a bowhead while bearded seals are trailing in the background. this is a display made by male bearded seals in the spring that is thought to be a reproductive display. there's the bowhead starting again and a second bearded seal is coming into the sound now. and now a third bearded seal. and more ice crunching, someone walking or moving on the ice. sounds transmits very well from the ice into the water. the wee wee is a bowhead and another bearded seal that just started. this is a particularly long one that lasts almost two minutes. that's a second bearded seal starting. in this recording there at least four bearded seal at different distances from the gopro that are all making sounds at the same time. >> so all of that, sounds like it was just five different animals, four nearby bearded seals and one bowhead while in the distance. still ahead, we move from alaska to miami to see the effects of climate change there. but first the zip line that doesn't make it to number 10 downing street next. urn relief . they work fast and don't taste chalky. mmmm. incredible. looks tasty. you don't have heartburn. new alka-seltzer heartburn relief gummies. enjoy the relief. afdave stops working, but his aleve doesn't. because aleve can last 4 hours longer than tylenol 8 hour. what will you do with your aleve hours? today improbably the uk witnessed its second brexit in less than a week. the face of the movement to leave the eu and pseudo popular lawmaker, thought to be a front-runner to replace david cameron, that man, boris johnson, opted out for the race for prime minister. >> let us seize this chance and make this our moment to stand tall in the world. that is the agenda for the next prime minister of this country. while i must tell you, my friends, you who have waited faithfully for the punchline of this speech, that having consulted colleagues, and in view of the circumstances in parliament, i have concluded that person cannot be me. >> so after securing a shocking upset victory from the brexit referendum, why is boris johnson now not running? possibly he was boxed out by a key ally who earlier today revoked support for him and declared he was running for prime minister himself. but not everyone is buying the accusation that johnson was out-maneuvered, including lord michael hezel teen who accused him of running for the hills in the wake of the brexit vote. >> he's ripped the party apart, he's created the greatest constitutional crisis of modern times. he's knocked billions off the value of the nation's savings. he's like a general that led his army to the sound of guns and at the site of the battlefield, abandoned the field. >> ouch. to put it more succinctly, if you brexit, you bought it. he's knocked billions off the there's a more enjoyable way to get your fiber. try phillips' fiber good gummies plus energy support. it's a fiber supplement that helps support regularity, and includes b vitamins to help convert food to energy. mmm, these are good! nice work phillips'. the tasty side of fiber, from phillips. ♪ it's here, but it's going by fast. the opportunity of the year is 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tonight we'll take you to miami, florida. the signs of climate change are there to see as salt water bubbles up from storm drains during high tides, flooding made worse by sea level rise. the people of miami are starting to reckon with what it's doing to the city they love. >> people are starting to focus on what's happening in miami because we're seeing it first, and we're seeing kind of the most extreme cases here, but ultimately, we are the canary in the coal mine for the rest of the country. >> miami, florida, is booming. it's one of the world's great coastal destinations. from the art deco wonderland of miami beach, with its iconic hotels and pristine beaches to the everexpanding skyline and towering condos, a stories coastline of opulent estates and picturesque water fronts. today it's never been more popular -- or more vulnerable. >> i suppose for our great, great grandkids, this will be a great snorkeling site. people that are denying that are saying it's all going to be okay, they don't get it yet. >> the cities of miami and miami beach are separated by biscayne bay. the ocean is what attracts millions of people to live and vacation here. and it is the ocean that will ultimately drive people out. >> the current u.s. government forecast for rise this century, with accelerating ice melt is between 4.1 and 6.6 feet. that's unbelievable. >> those kinds of projections will not only threaten south florida's coastlines, but radically change them. most of the region is at or near sea level. >> when you fly into miami international airport, you're flying into what was the everglades. so we've really modified the land. we're very low. less than 9% of miami-dade county is greater than ten feet above sea level. >> adding to the problem, most of south florida is built on porous limestone, which allows water to move around easily and seep up through the ground. flooding happens often here and not just when it's raining. seasonal high tides occur, leading to flooding, made worse by sea level rise. >> you can see that every day when you go into miami beach. at least in october, we'll have four, five extreme flooding events when the sky is clear. it's coming up the sewer drains, flooding from sea level rise. that's an impact that we're seeing already today. >> the city of miami beach is already adapting. it plans on spending hundreds of millions of dollars on re-engineering infrastructure vulnerable to flooding. that means literally raising the roads. >> this is actually where the original road was built. it was much lower and it used to flood consistently. now we're standing on the new road, which is multiple feet higher, which is completely dry and has pumps as well. >> mayor philip levine campaigned on the issue of flooding in miami beach. even starring in an ad showing him paddling through the streets in an improvised kayak. >> i'm not sure how much more of this earl and i can take. >> but even as he battles the rising seas, he's welcoming the developers. >> there's no market reaction negatively about sea level rise. at miami beach we're doing something progressive and the world is listening to us and coming here in droves. >> and it's not just miami beach. south florida is one of the fastest growing regions in the country. home to six million people. and over the past five years, the city of miami has undergone a multi billion dollar, skyline altering development boom. >> we've had probably the most significant urban development in miami, probably unprecedented in terms of valuation, of what's being created and the dollars that are being spent, and the value of the properties that we've never seen before. >> meanwhile, a record-breaking number of people visit said the area last year. that's a good thing. the economy depends on it. >> tourism is our main industry, and we don't have state income tax. in south florida, tourism and property tax are the main source of revenue for our communities. >> but much of that property is at risk. hundreds of billions of dollars of assets are currently exposed to the rising seas. billions more will be threatened in the coming decade. regardless of whether greenhouse gas emissions are lowered. >> we've put a certain amount of co2 into the atmosphere, that's warmed the oceans and the atmosphere and that's going to persist for the next 25 years or so, maybe longer. we've made a commitment, it's already happening. we have to adapt to that. >> day to day, there isn't anywhere prettier to live. honestly. but we have to start planning for the future. so many elected officials are afraid to look at the truth because they're frightened about property values, which equal taxes to do their things, including upgrading the infrastructure. but we should be honestly warning people. >> nicole hernandez hammer is trying to sound the alarm. >> hi, good morning. >> we'll still get water back here. >> is this rainwater, or is this always here? >> this water is always here as well. >> as part of an effort from the union of concerned scientists, she visits low-lying, low-income areas and talks to residents about how sea level rise is affecting them and how they can adapt. >> sometimes i feel like it would have been great for me to take more, you know, psychology courses or sociology courses to deliver this information, because it's not -- it's not good information. and, you know, it's hard news to share. >> part of her job is to visit places like liberty city, one of the poorest neighborhoods in miami, developed at about ten feet above sea level. people here are worried about what happens to them when affluent beach communities start looking around for higher ground? >> yeah, because we're on high level. we're what you call prime property, prime land, right? and so definitely, if you can afford to live on south beach, definitely you can afford to live in liberty city. >> but the bigger concern for the future, maybe whether people can continue to live in south florida at all. >> when i talk about sea level rise projections, even the most conservative projections are grim. and so for me, that's been probably the hardest part of what i do, but i feel like those are necessary conversations to have, because people need to be able to know what we are truly dealing with, and so that they can ultimately decide if they're able to be a part of making that community resilient, or if they need to move their family elsewhere, in order to be able to keep going. >> at some point, maybe around the middle of the century or just beyond, we the people have become afraid of the ocean and we'll probably be helped along with that by lack of mortgages and a lack of insurance. it's going to be a challenge. and we should plan for that, because otherwise we become a bunch of oakies who can't sell our house, that was our retirement income, now we're on the road, on the boat going north, hoping to find a place to start over. >> many sea level rise experts say current adaptation projects like a series of underground pumps being installed in miami beach will likely be submerged by rising water in the years to come. miami beach's mayor says future innovation will help in the fight against sea level rise. and speaking of future innovation, tomorrow night, my exclusive conversation with secretary of state john kerry on the solutions he sees to fighting climate change, like revolutionizing our energy sector. >> i don't believe government is going to solve this problem. i believe the private sector is going to solve it, great entrepreneurs and people of daring and creativity that will make a hell of a lot of money, because this is going to be the biggest market the world has ever seen. >> much more on my conversation with secretary kerry tomorrow night. that is "all in" for this evening. the rachel maddow show starts right now. >> you're amazing, it's a privilege to work with you. >> likewise. >> happy thursday. president obama and presidential candidate hillary clinton have not yet campaigned together. she received president obama's endorsement a few weeks ago and the two of them had intended to do a joint event a couple of weeks ago in wisconsin. but that ended up getting canceled after the mass shooter in orlando, florida. president obama and hillary clinton have now rescheduled their first joint campaign appearance, it's going to be next week in north carolina. and today we learned that in addition to hillary clinton appearing with president obama on tuesday in north carolina, later in the week on friday, she's also going to do a joint