Investigators at the bureau of alcohol, tobacco firearms. Now, after meeting this afternoon with his attorney general, loretta lynch, the president said he was confident these changes are consistent with the second amendment, that theyre not an unconstitutional end run around congress, but, scott, one thing is all but certain these proposals and these executive actions are going to be challenged, whether in conditioning or in court. Pelley just as the president s executive actions on immigration have been challenged in court. Jan crawford at the white house tonight. Jan, thank you very much. The president s shot was heard everywhere on the campaign trail today, and with less than four weeks to the first voting, candidates are turning to their own big guns. Major garrett is in New Hampshire tonight. Major . Reporter scott, republican president ial candidates condemned the president s executive action as overreach even before the details were known. Not surprisingly, president obama received strong support from democrat Hillary Clinton, most poe tent political weapons. Bill clinton held his first Solo Campaign event of this election cycle, admitting the times feel a bit unsettling. First of all, im happy grandfather. Im not mad at anybody. Reporter clinton was in New Hampshire, a state where his affections run deep. The form president s secondplace finish here in 1992 paved the way to the nomination. Hillary clintons win in 2008 got her back into the race against barack obama. Unlike that campaign when bill clinton act as his wifes costrategist and hyperactive endorser, today he breakthrough a quieter pitch. I do not believe in my lifetime anybody has run for this job at a amendment of greater importance who was Better Qualified by knowledge, experience and temperament to do what needs to be done now. Directly address Donald Trumpss recent attempts to dredge up his 1990s sex scandals. Campaigning in iowa, Hillary Clinton said she had a resolution. Im going to let him live in his alternative reality and im not going to respond. Reporter trump took on the democratic frontrunner in his First Television ad. The politicians can pretend its something else, but donald trump calls it radical islamic terrorism. Reporter these border immigrants of migrants are not migrants from mexico, but rather immigrants crossing into morrow co. Morocco. Pelley Major Garrett on thanks. Now for some insight we turn to john dickerson, our cbs news political director and the an cowr of face the nation. John, what do you make of that trump ad . Reporter well, its an ad about fear and walls, fear of illegally. Trump started his campaign promising a wall the keep them out, and its about fear of islamic terrorists. Trump promises to keep them out by temporarily wall off muslims from entering america. Republican voters rank these emotional issues as pop concerns and trump on these issues has a decided advantage over his opponents. Pelley the iowa caucus is february 1st, less than a month away. Where does the race stand . On the republican side the and everyone else. The alternative might be ted cruz or a mainstream candidate republicans like, someone like marco rubio or chris christie. On the democratic side, Bernie Sanders is the grassroots champion, but unlike on the republican side, establishment support is notplit. Theres just Hillary Clinton, who is the stable frontrunner. With less than a month to go before the voting starts, campaigns are at the point where every decision they make about travel, about resources could have irrevocable consequences. Well be watching sunday on face the nation. Thanks, john. Thanks, scott. Pelley tonight Law Enforcement is not moving to retake a government building at a National Wildlife refuge in oregon. The building was seized two days ago by armed protesters, another flareup in the generationslong showdown between ranchers and the largest landlord in the west, uncle sam. John blackstone is there. Reporter at the entrance to the wildlife refuge headquarters, ammon bundy declared this a fight hes determined to win. And it is left to us to decide whether we allow these things to go on or whether we make a stand so they will not happen to other people across this country. Reporter the occupation began saturday after a demonstration in support of local ranchers dwight and steven hammond. They were convicted for arson after a fire on their ranch spread on to federal land. They arrived at a prison in begin a fiveyear sentence. Do you want the federal government to give up this wildlife refuge, give it back the ranchers . Is that the demand . I want the federal government to abide by the constitution of the united states. Get out of here, you cowards reporter in 2013, bundys father cliven battled government officials over grazing rights on federal land. That escalated into an armed confrontation. So far in oregogo there has been no confrontation. Not a single Law Enforcement officer to be seen for miles around the occupied refuge. Here inside the compound there is plenty of heavy equipment, but we dont see any evidence of weapons by the occupiers. Frankly, we dont see many occupiers. While there is no evidencee of broad local support for the occupation, in this wideopen country, independence is highly valued. Jennifer kady grew up here. The government is being so big, were slowly being stripped of our freedoms and people dont its happening right under our nose. Reporter the county sheriff did have a message for the occupiers here today, scott. He said if theyre really here to help the people of this county, its time for them to go home. Pelley John Blackstone reporting tonight. John, thank you. Theres more extreme weather in the forecast. With arctic air blasting the northeast, rain and snow in the west, and in the midwest, the historic winter flood is rolling on. At least 25 people have been killed there. Theres in peace in olive branch, illinois, where we find David Begnaud tonight. David . Reporter scott, good evening. At least half of the town of olive branch, illinois, is underwater tonight. There are flooded homes like the one behind me for miles in areas that are known to be vulnerable to major flooding. Theres the breech. Reporter in alexander county, illinois, the flooding is disastrous, and the temperature is near freezing. Reporter today the u. S. Coast guard flew us over the spot where the 18mile lynn fall levee failed about 72 hours ago. This is where the levee breeched sending water from the Mississippi River into a floodplain. At least 100 structures are flooded, 14,000 acres of the county are underwater, and the water is rising. Reporter this is the home of brandonon dillow and jennifer korte. They built their levee eight feet high. Tonight theyre dry. In 2007 their levee was five feet high and water got inside the home. Depressing. It changes your whole life. Reporter many like them have been asked to evacuate but refuse. This mans elderly parents got out, but the others stayed behind to save what was left. You worry about everything you got and everything youre going to lose. Reporter from the air you see the home is surrounded by this family has 25,000 sandbags and water pumps working to keep the home dry. So far theyre holding. Reporter back near the levee breech, we spotted this herd of deer, victims of the unreelecting flood running for an escape. We notice tonight the water seems to have dropped about an inch in the last six hours. Thats great news for the bigham family. Friends and family are working around the clock, dead set on saving this house that has been here since 1959. Some of this floodwater could reach memphis by friday. Pelley david, thank you very much. Ben tracy is reporting much of this crazy weather is being driven by the warming Pacific Current known as el nio. Reporter el nio has already hit californias mountains. The latest snowpack survey found five feet of snow in the sierras, a welcome sight after four years of drought. Southern california is now Josh Rubenstein is a meteorologist at kcbs in los angeles. Were looking at about an inch to two inches of rain in the l. A. Basin, and right on its heels, heres that third system thats moving in on wednesday. The rain from that could linger all the way into friday. Reporter el el nio is abintense warming of the pacific notion near the equator that changes weather patterns around the world. This is one of the largest on record. In glendora, california, eric erby was stocking up on sandbags. It could happen any time anywhere. It depends on how much. Either way, ill make sure im prepared. Reporter los angeles is designed to prevent flooding, which is why the Los Angeles River is encased in all of this concrete. It may look like a pathetic little stream tonight, but, scott, later this week you could have ten to 20 feet of water filling this channel. Elley ben tracy, thanks. Well, it was wave of worry that swept world Financial Markets today after stocks in china the dow was down as much as 467 points, but it recovered, ending with a loss of 276 or 1. 6 . It is the worst start to a year since the great recession. The markets were also rattled by saudi arabia and iran. The two are rivals because the saudis represent the sunni branch of islam and iran is home to the shiite branch. Over the weekend the saudis executed a shiite cleric after a furious iranian reaction, countries in the gulf are choosing sides. Heres Holly Williams. Reporter in iran today, angry protesters denounced saudi arabias execution of the shiite muslim cleric nimr alnimr. His death has opened a 1,400yearold wound, enflaming texts between sunni and shiite muslims. Saudi arabia, alnimr dared to demand equality for shiites and was shot and then arrested in 2012. It was in shiitedominated iran that Saudi Arabias Embassy was ransacked and burned on saturday. Around 30 people were later arrested, but iran made its feelings clear by renaming this street in honor of the executed cleric. Saudi arabia and iran are already fighting two deadly proxy wars against each other in syria and yemen, taking sides among religious lines. Now there are fears that alnimrs execution will fuel even more violence in the middle east. Shiite muslims also clashed with police in bahrain. They used tear gas and rubber bullets against the protesters. Blaming iran for the escalation, saudi arabia has severed its ally, bahrain, has followed sued, while the United Arab Emirates has recalled its ambassador. With many countries in the middle east already torn apart by religious differences, these tensions could destabilize the region even more, especiallll scott, if saudi arabia and iran try to use those religious divisions to furer their own interests. Pelley Holly Williams reporting for us tonight in istanbul. Holly, thank you. Oklahoma . And theyve discovered the wreck of el faro, the worst u. S. Maritime disaster in 30 years. When the cbs evening news continues. We came up with a plan to help reduce my risk of progression. And everywhere i look. Im reminded to stick to my plan. Including Preservision Areds 2. My doctor said Preservision Areds 2 has the exact nutrient formula to help reduce the risk of progression of moderate to advanced amd. After 15 years of clinical studies. Preservision areds 2. Because my eyes are everything. Seems like weve hit a road block. That reminds me. Anyone have occasional constipation, diarrhea. Gas, bloating . 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Ive smoked a lot and quit a lot, but ended up nowhere. Now i use this. The nicoderm cq patch, with unique extended release technology, helps prevent the urge to smoke all day. I want this time to be my last time. Thats why i choose nicoderm cq. Pelley after a swarm of small earthquakes in oklahoma, the state has ordered oil drillers today to reduce the amount of wastewater they inject known as fracking. Heres mark strassmann. Reporter oklahoma, not california, is now americas earthquake capital. Who do you call if youou feel an earthquake . Reporter until 2008, the state averaged one or two a year. Now its almost three a day. It was a big boom. And everything started shaking. Reporter including you . Including me. Reporter a 4. 5 magnitude earthquake hit crescent, oklahoma, last july. Grocery clerk Lois Gillette hugged a coworker. I thought i was going to fall. There was a lot of stuff fell off the shelves. Reporter oklahoma keeps breaking records for earthquakes with magnitude of 3. 0 or higher. More than 900 last year alone. But why . Most jolingses connect the spike in earthquakes to the states oil and gas industry and its water into underground caverns. Geologist todd halihand teaches at oklahoma state. Unfortunately these injections well, theyre startling when you feelhem, and there are now a lot of people experiencing them on a pretty broad scale. Reporter Lois Gillette isnt taking sides. I dont know if its manmade. I dont have any idea. Reporter you would just like it to stop . I want it to stop. Please. Reporter one geologist we talked to said no question something has reactivated fault lines here, fault lined that had been dormant for 300 million years. Pelley mark strassmann, and well be right back. My Opioid Pain Medication makes me feel stopped up. Thats called opioidinduced constipation, or oic. A different kind of constipation. Finding relief has been a real struggle. 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S. B. s investigator, tom tom rothroffy as el faro was discovered 15,000 feet under the ocean. This is where el faro came to rest, upright, hull largely intact, her name mangled on the stern. Her depth markings reported that this, the bow, had sunk 15 eat the into the mud. Her autopsy revealed a body that had been savagely beaten, steel crushed, equipment collapsed. There was in sign of the 33 crew members. Seabed. Thats a microwaveven, and on the right, thats a printer. Here is the top of a car with a sunroof, part of the cargo. At the top of that white line there is the most surprising part of our video surveys. Pelley what should be there . There should be two decks above that. The lower navigation bridge deck and the bridge deck. Pelley the two top decks had sheered off, including the bridge, where captain davidson would have been fighting the storm. They were nowhere near the ship. Also missing, the voyage data recorder, like a socalled black box on an airplane. 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It will be high intensity. Reporter hit is the mantra at orange theory fitness where eddie diaz is a coach. This will be it here. Get those nice deep breaths in, and after youre done with your ten second, you get back the work. Reporter the hit regiment varies from place the place. Here the goal is to work out in what they call the orange zone, at a high intensity level for 12 i felt completely out of shape. Reporter 36yearold shelly ramsammy has asthma and used to be afraid of vigorous exertion. She tolerated the interval training well and last summer she had added incentive. I was trying to get fit for a trip. Im going to be in a bikini. I have to get fit. Reporter after building up slowly, exercise experts recommend that, she now runs twice as fast as before. Research shows highintensity training stimulates the muscles to burn fat and sugar more effectively. Why is it hot now . I think because research has been showing that it can be pretty powerful in improving peoples risk factors for Heart Disease and diabetes. Reporter powerful, too, in getting some people off the couch. Because at the end of the day, exercise works best if you actually do it. Dr. Jon lapook, cbs news, new york. Pelley and weve got to run. Ar thanksrjoins us for 7 news at 7. Make sure you andekids stay bundled up. On yrmorning commute. Were off to a cold sr thise and the fros temperatures. Are not expe. Let up. Haywood and yanc county schools closed early. Because of Winter Weather like you see here. From our spruce pine camera. Thought january. Snow is a bit of a shocothe se. After several weeks warm temperatures lets fin out more. Fr chief on capi hill. Today was all about gun control. President obama s hes moving forward on new gun control measures without congress. Details othe new policy. Are still being worked out. But we know it focuses closing loopholes. That allow some gun sales without background chec. And makinit modifficult for convicted domes abusers to buy firearms 4146 we know we c stoeytfo bat wr sene 120 pinl ctt ne lryo ot e g spd gterds. Etnooacst too much work the housene a bktoot week and they vowing to fight. The presidtproposal. The foe police offe who shot ankillear scott couldsoonet jail. During a hearing this afternoon. A judge graemichaelslager a 500 thousand dollar bond. More tha dozen people support slager. Slager