As the feds make a push to ban it. Nightly news begins right now. Good evening, there are exactly three weeks to go until election day. And with donald trump continuing today to sew seeds of doubt about the integrity of the voting system, president obama jumped into the middle of things, advising trump to stop whining. Trumps conspiracy theories and mantra about a rigg election have c define much of the home stretch of the campaign, along Hillary Clintons daily email embarrassments. If theres a shakeup in the state of this bitter race coming, it could come tomorrow night when the two meet in las vegas for their final debate. Thats where Hallie Jackson leads us off tonight. Hallie . Reporter hi, lester. Donald trumps aides say he spent part of his morning preparing for the final president obamas half brother as one of his guests here tomorrow, a signal everything is now on the table. Donald trump tonight complaining of corruption voter fraud is all too common. Reporter to president obama, hes just complaining. Id advise mr. Trump to stop whining and go try to make his case to get votes. Reporter the president slamming trump for his rhetoric about a rigged system. I have never seen in my lifetimer modern political history any president ial candidate trying to discredit the elections. Reporter even some republicans like marco rubio agree trump should stop stoking voter fraud fear in the face of overwhelming evidence our elections arent rigged. They even want to try to rig the elections at the polling booths where so many cities are corrupt, and you see defiant and undaunted, two words that describe his final three weeks, trailing Hillary Clinton, hes now trying to shake up the race by showing he can shake up washington. Proposing term limits for members of congress. Hes running against the establishment, but still chased by his own controversies, like an accusation of Sexual Misconduct against him from a former People Magazine writer. Not verified by nbc news, and denied by trump, the magazine today publishing the accounts of five people who say the writer told them what happened at the time, and another who said she was with the writer when they encountered Melania Trump later in new york. It was not true. So how we could believe her . That never happened. To turn the tide, trump needs to rally his base to make sure they show up in three weeks. Every time theres been open running room for donald trump, he doesnt advance the ball. Tomorrow nights his last chance. Reporter in the audience as his guest tomorrow, the mother of shaun smith, who for trump, a focus on clintons controversies instead of his own. Hallie jackson, nbc news, las vegas. Reporter im andrea mitchell. Tonight Hillary Clinton arriving in las vegas as the clinton team prepares for the home stretch. The strategy, in the debate, stick to issues, try to appear president ial, no matter what donald trump does. With trump trying to ralth clinton by bringing the mother of benghazi to the debate. Benghazi, there have been seven to ate congressional investigations on. That was all for the people who died, jen. We think its a resolved issue in the voters minds. Reporter also dealing with the torrent of stolen emails released by wikileaks. Tonight, new messages, one from Campaign Chairman john podesta calls Bernie Sanders a dufus. Another, three months deistista l potential running mates in what he calls food groups, dividing them by race and gender. On the list, apples tim cook, bill and melinda gates, sanders down at the bottom of the email in a category all by himself. Despite those emails, tonight team clinton sending sande to arizona, going for a win in red states. Michelle obama going there thursday. Trump is the least qualified, the least qualied history of this country. Reporter and clinton getting more backup tonight, after an fbi agent said he felt pressured by the state department not to label one of clintons emails classified, a charge tonight by both the fbi and the state prident ama weighing in. I think youve heard directly from both the fbi and the state department that the accounts that have been put out there are just not true. Reporter clinton aides tonight just laughing off Donald Trumps recent charge the debate. Her schedule after tomorrow nights debate, nonstop travel to the battleground states, ohio, pennsylvania, north carolina, new hampshire, and florida, all in the next week. Lester . Andrea mitchell tonight, thanks. And for more now on where the electio stands and what we should booking for heading into tomorrows final dw im joined by our political director and moderator of meet the press, chuck todd. When you look at the s over the many months, t there, but opinions of these two candidates havent changed that much. Were into the final three weeks, the big debate tomorrow, what could happen that might change things . To me, thats the most important question. Here weve had ten straight months of polling and campaigning by these two, and the negative feelings at the start of this year that the public had for both of them are still there. They feel more negative about him than her. So the question is, is there anything in the next three weeks . Obviously, if youre trump, you need to i think the onl thing that can change trajectory in this race is some unknown incident, because at this point, i think everything feels like its starting to settle into concrete here. The only time weve seen anything move at all is when we heard the words of donald trump in that videotape. Thats the type of issue that would have to pop up to actually change the direction of this campaign at this point. Who has more riding on trump by a mile. He has to have a great debate, almost a knkout performance in order to change the direction of this race. All right, chuck todd, thank you very much. Well have full coverage and analysis of tomorrows final president ial debate in las vegas, starting at 9 00 eastern, 6 00 pacific right here on nbc. Turning now to iraq and the americansupported campaign to take back the city of mosul from the front lines have already discovered, its going to be a difficult fight. So far commanders say the operation is going according to plan, but are warning about what isis may do overseas in retaliation. Our chief Foreign CorrespondentRichard Engel is in the region and spoke exclusively with the general leading the american effort. Reporter hows it going . Its going well. Reporter in his first interview since the offensive to push isis out of mosul began, Major General his troops are providing air support and heavy artillery, but not leading this charge. The iraqis have the momentum, they know it, and they want to get there as quickly as they can. Reporter we followed iraqi troops to the front line to see for ourselves. We made our way to the newly liberated village of hud. Shes happy said a man ush approximating his 80 grandfather. Soldiers. But why were these people carrying white flags . Because iraqi troops have moved on, even though villagers say there are still isis fighters here. And what we saw next was a war planners worst nightmare, entering this sunni village were shiite militias. In a country thats seen civil war between these two sects of islam, its a dangerous mix. But what happens here could have internationa consequences as well. General valesquey is concerned that in retaliation for losing mosul, isis could launch terror attacks on targets in the west. Thats what were worried about from my perspective, back at home, when mosul falls, how are they going to try to deflect the attention . Reporter but for now the troops are focused on the task at state or caliphate was born. Theres not going to be a caliphate. Reporter this battle is just beginning, and these are just the first of what aid agencies could be more than a Million People driven from their homes. They suffered under isis, now theyre paying the price for yet another fight for mosul. While u. S. Backed iraqi troops are advancing toward mosul,sis is saying that nothing is wrong. Its propaganda today people at work, eating cab ab in the city, life as normal. Lester . Richard engel, thank you. Back home, much of the eastern half of the country remains in the middle of a fall heat wave this evening, while new york was one degree short of a record new high for this date. Highs for this date were set throughout the northeast and down to texas with temperatures in the mid to upper 80s. More of the same is or tpredicorrow when dozens of records Indian Summer in full swing. Now to the brutal and shocking execution on mera in mexico. A federal judge who reportedly played a role in Joaquin El Chapos guzmans extradition process to the u. S. Was shot in the back of the head in broad daylight while taking a jog. Reporter the shocking Surveillance Video shows the judge jogging when a gunman runs up from pulls a handgun, then the trigger. A point blank execution of the judge, a 37yearold mexican judge was reportedly involved in the extradition process of drug king pin Joaquin El Chapo guzman, and other high profile cartel members. Addressing the nation, mexicos president promised a full investigation. El chapo is behind bars in federal prison, but experts brutal hits. Last month, mexico army saysl sons were behind an ambush that left five soldiers dead. El chapos lawyer says the widely feared drug lord who escaped from prison twice using tunnels like this one, was not involved in the murder. The jge also presided over other cartel cases and had not requested personal security. Mexican Drug TraffickingOrganization High level government officials, take my silver or take my lead, and its been very effective. Reporter with el chapo facing extrition to the u. S. Next year, the investigation into this brutal hit is just beginning. A crime designed to send fear through a nation doing exactly that tonight. Miguel almaguer, nbc news. There is news tonight for millions who depend on Social Security. Dont expect a big a. 3 increase in monthly benefits, that adds upobout 4 a month for the average recipient. The average monthly Social Security payment now 1,238. The cost of living adjustment will be small because inflation is low and thats due in part to low gasoline prices. Still ahead tonight, a warning for parents, an alarming rise in overdoses and deaths from a new drug more powerful than heroin being purchased by teenagers legally online with words, this is why the committee awaedim the literatu burke at farmers, weve seen almost everything, so we know how to cover almost anything. Even mermutts. 1940s aqua music weve seen a thing or two. . We are farmers. Bumpadum, bumbumbumbum . Coaching means making tough choices. Jim youre in but when you have high Blood Pressure and need Cold Medicine that works fast, the choice is simple. Coricidin hbp is the only brand that gives powerful cold symptom relief without raising your Blood Pressure. Coricidin hbp. Does your child need help with digestive balance . Try align junior probiotic. So she can have a fraction dominating. Status updating. Helloyellowbelt kind of day. Get 24 7 digestive support with align junior. The 1 doctor recommended probiotic brand, now for kids. Why do people count on Sunsweet Amazin prune juice to stay fit on the inside . Its made only from prunes, nothing else. From sunsweet, the feel good fruit. . Jake reese, . Day to feel alive . . Across the country, paramedics are seeing a rise in Overdose Deaths from powerful drugs legally bought online and shipped to teenagers in the mail. The drugs are synthetic opioids, stronger than heroin, and chemically designed to get around states. One of those drugs is called pink and it has a small town in utah under siege. Lets get more on the story now from gadi schwartz. Reporter in park city, utah, pain and disbelief. I feel lucky that our last words were i love reporter hey were only 13, two best friendsn middle school dead, reasons still under investigation. But Police Suspect a new drug more than twice as powerful as heroin that you can legally buy online. Know that they were shipping packages to friends house. Reporter in park city schools, students were calling it pink and secretly talking about it over snapchat. We looked at computers, social media, and started to see a trend. The term pink kept popping up. Reporter now worried parents are warning their children about the drug, a synthetic opioid report davidsonsaughter jane s p deaths of the two boys are all her classmates can talk abo. Pink is one of a growing number of unregulated chemical compounds being shipped to the u. S. From abroad. Eight killed in florida this year, over 50 deaths nationwide while only four states have made it illegal. The dea now pushing for new laws to ban the chemical compound, while the most effective protection may start with conversations between parents and their children before its too late. You know, i just worry about you. Kids im in math class with just just like not being there one day. One bad decision can have permanent, lifealtering consequences. Yeah. Reporter for now, this mother hopes her love can overcome a drugs deadly pull. Gadi schwartz, nbc news, park city, utah. And up next here tonight, this years medicare only covers about 80 of your part b medical expenses. The rest is up to you. So think about an aarp Medicare Supplement insurance plan, insured by unitedhealthcare insurance company. Like any standardized Medicare Supplement insurance plans, they help cover some of what medicare doesnt pay. So dont wait. Call now to request your free decision guide and learn more. Its just a cough. Youd see just how far it can spread. Robitussin dm max is now better tasting, with t same fa powerfulough relief. Tussin dm max. Because its never just a cough. You wanna see something intense . Pantene expert gives you the most beautiful hair ever, with our strongest prov formula ever. Strong is beautiful. Eat more fiber. Flax seeds. Yogurt. Get moving. Keep moving. I know try laxatives. Been there, done that. My chronic constipation keeps coming back. I know. Tell me something i dont know. Vo linzess works differently from laxatives. Linzess treats adults with ibs with constipation or chronic constipation. It can help relieve your belly pain, and lets you have more frequent and complete bowel movements that are easier to pas do not give linzess to children under six it may harm them. Dont take linzess if you have a bowel blockage. Get immediate help if you develop unusual or severe stomach pain, especially with bloody or black stools. The most common side effect is diarrhea sometimes severe. If its severe stop taking linzess and call your doctor right away. Other side effects include gas, stomacharea pain and swelling. Talk to your doctor about when it was announced lt week that American Music legend bob dylan had wob the nobel prize in literatu, the spread aroun world and just about everyone had something to say about it. But dylan hif, a remain silent. En to storyrom nbcsr . Usimmons. . . Reporte arded liraryhor, tonight its unclear if hell go to the ceremony in sweden. The voice of a generation saying nothing about the acco la. I thi himot responding to the nobel committee, is really in the spirit of his creative life. Ive nevern at kind of performer that t wantsbe onep of them,ne the crow reporte aft Committee Received no more than a friendly given up trying to back in 20,e did accept golden globe rt original ng. H w 16 seconds. Thi is quite somethg really. Thanks, curtis. Thanks, Hollywood Foreign press and ank my band, the Record Company and everybody in my it, really. Repter tonight, those whouestioned up, he shouldnt g it. But his fans just see dylan being dylan. He does it for him. He pysnd a he sings and he does it for him. . . The times they are a changing . . And while none of them are lucky enough to be nobel prize winners, a new group of big musical nam will soon be in exclusive company. The nominees for this years rock n hall of fame class includes journey, tupac, chaka khan, depeche mode, janes addiction and more. The inductees will be announced in december. When we come back, inspiring america. Well show you what what happened when a college turned its losing Football Team into a winning farm team. Nbc nightly news is brought to you by pacific life. Helping generations of families achieve thebounded because a decision was made to protect them. Qh making the right decisions today foyour longterm financial future can protect you anyour family, k a financial advisorcy. How retirement and Life Insurance solutions from pacific life can help you plan for your future. We thought fibers th help you stay regular then we switched to mirafiber. Wily mirafiber supports reri dailycomfort fiber. And is less likelyports reri to cau. Unwanted gas. Finally. . P itch tm fi e makersf miralax. Unwanted gas. C for tasee ya steady is exciting. With diabetes. 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Ask your doctor about viagra single packs. Finally tonight, a Small College in texas did the unthinkable in that state when it got rid of its losing football program. But in its place, the kids found another way the way to the big leagues. Steve patterson has tonights inspiring america report. Reporter i said in texas,hetate region is football. But at Paul Quinn College in dallas, the team was so bad they di have a prayer. We couldnt afford footba. Reporter so when the school brought in a new president , he shocked the lone star g r st of he game, replacing it with a it wasn ry popular with the ive g baseil, swid charred reporter the far manager helps students grow while learning to nd all in exchange for cash and college credit. Is about teaching them accountability, about how t show up on time, ready to work. For the actual pea reporter the yield, 30,000 pounds of organic produce. Theres no access to Fresh Produce ou ighborhood. Reporter once harvested its donat dallas nonprofs andol t lal reaurants, fa bigge client ithe o dals cowboys. Ding up in kitchens right her at stadium. When did you guys pick this . W picked these yestery ternoo very nice. Thats really, really cool. Reporte tod the scol tt k football out is feeding footballfans. We believe in it. This is something that was effortless and it makes a lotf sense, and it t int what we do witour partnership with them. Reporter this fall is flourishing and rollment is up. To know that if you apply yourself, you can make a way out of no way. Reporter a winning season on the field, tilling instead of steve patterson, nbc news, dallas. Thats gonna do it for us on a tuesday night. Im lester holt. For all o us at nbc newsk yo, thanfor announcer right now, from milwaukee, this is todays wtmj. Live at 6 00. Wisconsin ranks fir on a new list but its not necessarily a good thing. Wisconsin has the widest Graduation Rate gap for africanamericans versus White High School students. Thanks for joining us. Superintendent says its a challenge for districts all across the state. Shannon live in wwatosa t . Po break it down for us, casey. Reporter here in wauwatosa, theyve managed to keep the achievement fan between white and black students to 3 . They say despite external factors like poverty, theyve managed to prioritize attention for students in the schools to help them succeed three gls, on is math, for the public schools. We are certainly the most Diverse School district in the 25 highest performing districts in the state. Reporter its a distinction that comes with challenges that contribute to an achievement gap in other districts. The Graduation Rate for white students is 93 . 64 for black students. Thats a 29 difference. Southeast wisconsin has a range of graduation gaps. In brown deer, the difference is 2 . Racine comes out 20 difference between black and white students. Theres no need for achievement gaps. We just have to double down our efforts. The state superintendent says the divide is partly caused by a lack of resources for larger urban areas. But also its a problem of race. In wisconsin, race is a huge issue as it relates to achievement, and we have to make sure that all our kids have the same opportunities, and thats