Every month, has decided in his last year to test the limits of his power. Chief Legal Correspondent jan crawford has the breaking news from the white house. Jan . Well, scott, Senior Administration officials just moments ago outlined the executive actions the president will announce tomorrow which he says will help keep guns out of the wrong hands,. A major focus are what Officials Say are flaws and loopholes in the nations system of background checks. Among the recommendations are requiring gun dealers, including those who sell firearms on the internet or at gun show, to be licensed and conduct background checks for gun sales. Changing federal privacy rules to help keep people with Mental Health restrictions from possessing guns. Hiring more than 230 additional f. B. I. Employees to help process background checks. And a Budget Proposal for an additional 200 agents and investigators at the bureau of 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, who today deployed one of her 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. Reporter clinton did not recent attempts to dredge up his 1990s sex scandals. Campaigning in iowa, Hillary Clinton said she had a trumpinspired new years 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 the campaign. 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 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 race is a battle between trump 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 not split. 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. Pelley john dickerson, well be watching sunday on 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 oregon 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 evidence 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 see it. 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 home. Reporting tonight. John, thank you. 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 . Evening. At least half of the town of 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. Spot where the 18mile lynn fall levee failed about 72 hours ago. This is where the levee breeched sending water from the 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 Brandon 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 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 bracing for a series of storms. 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. Pelley ben tracy, thanks. Well, it was wave of worry that swept world Financial Markets today after stocks in china plunged. 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. In the sunniled kingdom of 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 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, especially, scott, if saudi arabia and iran try to use those religious divisions to further 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 that the National Eye Institute recommends 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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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 feel them, 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. Paint a different picture. Talk to your doctor about oic and prescriptiontreatment options. 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T. S. B. s investigator, tom tom rothroffy as el faro was 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. Equipment and cargo litter the seabed. Thats a microwave oven, 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. Theres nothing above there. Pelley what should be there should be two decks above that. The lower navigation bridge deck and the bridge deck. Pelley the two top decks ha