The republican race, petty, profane and unprecedented now hap prominent republicans talking of an independent candidate if trump wins the nomination. Race became the weapon of choice today. Major garrett is with the republicans. Reporter following the news that former kkk leader david duke was s sporting donald trump, black lives mattersrs protesters interrupted a trump rally in virginia. A Time Magazine photographer tried to leave the press area to shoot the protesters as escorted from the venue. He was thrown to the ground by a secret service agent. Photographer chris morris admitted to cursing at the agent before the confrontation became physical. Momois said the agent grgrbed him by the neck ananput him in a chokehold. I am dealing with some real sleaze bags up here. Beeve me. Im telling you. Politicians. Criticizing reporters and makes unwelcome. Out. Get out. Out. Trumps momentum towards the gop nomination brought a sharper edge to his already raucous rallies. Marco rubio complained that gutter rhetoric makes headlines. What an indictment on the state of political debate in the country today. Reporter yesterday, rubio himself dove into the mud. You know what they saabout men with small hands. You cant trust them. You cant trust them. Reporter rubio is hoping for Strong Enough finishes tomorrow to stay competitive in the delegate count. Ted cruz is bankg on a victory in his home ste of texas. And we are i believe going to have a big chunk of delegates. I think everyone else will be way, way, way behind. At that point it will become abundantly clear this is a two man race. Reporter secret service interviewed the agent involved in the altercation at the trtrp rally. Agency policy to protect the candidate. The photographer involved, chris morris said he will not press specially not after the way he provoked the agent. Major garrett reporting for us. Major, thank you. All lf this followed trumps responses to support he is getting wanted or not from the ku klux klan to. Day, mitt romney said trump has been disqualified. Here is dean reynolds. Reporter campaigning in virginia today, donald trump was boasting again. We have amazing endorsements, people that realal mean, we have hundreds of people now that want to endorse. Reporter praise from david duke, former grand wizard of the ku klux klan may test his following more than ever. Voting for these people, voting againststonald trump at this point is treason to your heritage. Reporter last friday, trump seemed to say no thanks. I disavow. Sunday he declined to rebounce the k. K. K. , duke or his support. David duke, okay. I dont know anything about what you are talking about with White Supremacy or supremacists. I dont know. Trump tried to clear up any confusion. I disavowed david duke all week long on facebook on twitter. He said a bad earpiece me it hard to hear the question about the kkk sunday though he used the same one for several interviews. In any case it is clear some far right groups like what theyre hearing from him. Has won the backing of the neonazi website, daily stormer r for example and American National super pac is making calls in super tuesday states. We dont need muslims. We need smart, well educated white people to assimilate to our culture. Vote trump. Reporter Southern Poverty Law Center which tracks hate groups says the super papawas started by white supremacist American Freedom party, trumps rhetoric is a coded appeal to racists. Educated person in this country could not know what the ku klux klan was is perhaps one of the most ludicrous statements we haha heard in mainstream politics in many years. Reporter the super pac backing marco rubio put it this way. Trump refuses to denounce the kkk. Think about that . For president. Donald trump has been heavily criticized before, scott, and so fafa his support for thehe nomination among voters in the party of Abraham Lincoln has held firm. Dean reynolds reporting for us tonight. Thank you. He polls are pointininfor a very good super tuesday for Hillary Clinton. Here is nancy cordes. Thank you. Reporter clinton said the republican candidates were behaving like grade schoolers. Remember the little box that used to be on your kids report play well with others. I i uld have to put a big no. Reporter she is poised to make the deans list tomorrow. The latest cbs news battleground trker shows clinton ledding sanders by 20 points in virginia, 24 points in texex and 2 points in georgia. Other polls have her up in tennessee, alabama, and massachuhutts. Ananshe is the former first lady of arkansas. That leaves sanders hoping for a strong showing in oklahoma. Colorado. Minnesota. And his home state of vermont. We can win. No question here in minnesota. If we have a turnout. The two have found common cause in their distaste for donald trtrp. When sanders called trump a hate mongor online, Clinton Retweeted it. But otherwise she has begun to focus less on him and more on her likely race against the republicans. Have been after me for 25 years and im still standing. Reporter the state department is releasing its final bah of clintons 30,000 emails toght. But, scott, that does not mean the saga is overer the fbi is stiti looking into her use of a private server and a federal judge wants some of her top aide to testify about it. Nancy cordes with the democrats. Thank you. The cbs overnight news will be right back. Almost sixty million americans are affected by mental illness. Together we can help them with three simple words. My name is chris noth from maine to maui, thousands of High School Students across the c cntry are getting in on the action by volunteering in their communities. Chris young action teams of High School Students are joining volunteers of americ and Major League Baseball players to help train and inspire the next generation of volunteers. Carlos pea its easy to start an action team at your school so you, too, can get in on the action. If you were a hippie in the 60s, you need to know. Its the dawning of the age of aquarius. Yeah, and someing else thats cool. What . Osteopororis is preventable. All osteos preventable . Right on if you dig your bones, protect them. All cbs cares political director at the top of the broadcast we talked about the republican identity crisis. Whats going on within the party . Well if the was a wall between the Republican Party and donald trump it is 10 feet taller. In conversations with republican strategists and staffers on the hihi theyre at wits enenabout what it would be look to have donald trump as the party nominee. Whatathey pointed out in h h interview w that he seemed to be trying so cararully not to offend anyone and call anyone a bigot when asked about the kkk and white supremacists. Suddenly he got politically correct. Whathey think, republicans i talked to, he was trying to not offend any southern voters. So in super tuesday, tomorrow. What house and Senate Leaders are worried about, what is it going to lk like in the fall thing he says. They were thing how they could take the nomination away. Or put a Third Party Candidate in if he became a nominee. Slip a Third Party Candidate in there. Hard to tell if theyre more unsettled about being tainted by trump or the fact there is not much they can do to stop him from the nomination. Thank you very much, john. In ohio today, a 14yearold boy opened fire on classmates in a School Cafeteria north of cincinnati. Two students were shot. Two others were hit by shrapnel. None of the injuries is life threatening. The suspect ran, but was caught nearby. There is no word yet on the motive. In virginia, the funeral is tomorrow for the Prince William county Police Officer who was gunned down on her first day on the job. Today the prosecutor said he may seek the death penalty. Here is justice correspondent jeff pegues. Reporter 28yearold ashley guindon, a decorated marine corps reservist, was just cacaer as a Police Officer her first day in uniform would be her last. Hold your traffic. Shots have been fired. Reporter saturday night she and two other officers were responding to a Domestic Violence call at this home. As officers approached the front door they were shot. Guindon rushed to the hospital. Pronouncnc dead a few hours later. The two other officers are expected to survive. Police say 32yearold Ronald Hamilton opened fire on the officers with a rifle. Hamilton a Staff Sergeant in the u. S. Army is also accused of killing his wife, crystal hamilton in the home. The couples 11yearold son managed to run to safety. According to the army, hamilton worked in it at the pentagon joint chiefs staff center and served in iraq two years. Prosecutors say hamilton had a previous runin with the law but would not release details. Prince William County prosecutut, paul ebert. Sad, sad, sad. Nightmare. Officer guindon in her high school y yrbook wrote, live fofo something rather than dying for nothing. Guindon, the 14th Police Officer killed in the line of duty so far this year. R. Scott, 11 of 14 were killed by gunfire. A number that has risen dramatally compared to the same time last year. Jeff pegues. Thank you, jeff. Turnininoverseas isis has been losing ground on the battlefield but striking back with a series of bombings in and around baghdad the past two daysys more than 100 were killed. Most at this marketplace in a shiite neighborhood. Isis is sunni. The otner main faction of ism. The u. N. Said today the ceasefire in syria is holding for the most part. A hotline set up by the u. S. Ringing off the hook. The civil war left many of syrias cities in ruin. And Elizabeth Palmer got rare access homs, a city that once had as many residents as philadelphia. Now just a fraction. Reporter after four years, and mega tons of explosives, thehe syrian army finally took back the city of homs from opposition fighters. But several rebel units escaped into the suburb of alwar where they tried to make a last stand. In the end though the violence was too much. Under siege and outgunned, the rebels caved in and agreed to talk. Theyre just out of sight at the end of that road. The syrian army wouldnt allow us in. But nay do allow the women out to get medical care and to shop for food. Whats changed . Negotiations going on with the government they tell me. Lifeas improved. The siege has ended. And our electricity and water are back. Supplies are flowing in too, though every single box is checked by the military. And every cacaster of gasoline probed for hidden weapons. But now what . In december, six busload of rebels and families struck a deal for safe passage out of alwar to opposition area farther north. That leaves about 1,000 left stuck. Still trying to o mmer out the terms of their defeat. There have been several of these, call them stalemates, call them minitruces across the coununy in the last couple of years, scott. They dont always go smoothly. Some are more successful than others. But in the end, they all most certainly save lives. Elizabeth palmer in the syrian capital damascus for us tonight. Liz, thank you. Off the label said 100 Parmesan Cheese. But it was 100 wrong. A contraceptive implant used by hundreds of thousand of women. And the best o oamerica. Awardedethe medal of honor. The cbs overnight news will be right back. Did you know theres a cough liquid that lasts for twelve hours . Try delsym twelve hour cough liquid. Its advanced formula releases powerful medicine that acts fast while its extended release medicine lasts for 12 hours. Try delsym. One day a rider made a decision. The decision to ride on and save money. His motorcycle insurance totoeico. Theres no shame in saving money. Ride on, ride proud. Geico motorcycle, great rates for great rides. This is mineral build up it collects leaving grosss germridden stains. Orox toilet bowl cleaner with bleach is no match for that. But lysol power toilet bowl cleaner eliminates mineral buildupffortlessly. Enough pressure in here for ya . Im gonna take mucinex sinusmax. Too late, were about to take off. These dissolve fast. Theyre new liquid gels. And youre coming with me. You realize i have gold status . Mucinex sinusmax quid gels. Dissolves fast to unleash max strenenh medicinene if y y love cheese, this news was pretty unappetizing. Some parmesan contains wood pulp. Then last friday an executive at a pennsylvania foooocompany pleaded guilty to selling cheese that had no relation to what was on the label. We asked jim axelrod to take a look. Reporter you would think when fda investigators found castle cheese marketing 100 Parmesan Cheese it was actually 0 parmesan the company had a problem. The product that t ey were marketing which was on the l lel was not what they were selling. Reporter the u. S. Attorney brought the case against the company after an fda inspection in 2012 found the parmesan was a like swiss and cheddar. And in one case, an unknown ingredient. Advertising it as parmesan and romano and putting Something Else so supplier could make more money. Thats clearly fraud on the consumer. Thisisas fraudulent in your view . Yes. Reporter we found fraud might not be the worst of it. These fda record show finished cheese was stored in the unrefrigerated room which could cause bacteria to thrive. The Company Found listeria in its production area ten times. But castle continued to produce and sell its cheese to stores like target and walmart without testing it. That might be troubling enough. If we didnt also find record from the Pennsylvania Department of agriculture which inspected castle around the same time as the fda. Those record tell a a ry different story. In june of 2012, state inspector David Trotter wrote the plant continues to be in excellent condition. I appreciate the plant management and the quality work his glowing reviews continued until august 2013 when he left the department of agriculture for a new job. Director of Quality Control at castle cheese. Im with cbs news. We asked trotter to explain reviews of castle but he declined. Castle cheese is no longer on the market. The company filed for bankruptcy in 2014. The fda will be rolling out new food safety regulations, the fda tellus designed to get state and federal inspectors on the same page. Jim, thank you very much. Well, chris rocked the oscars last night. Him . If they nominated a host. I wouldnt even get this job. So you wou be watching neil patrick k rris right now. Chris rock roasted the oscars last night on the issue of diversity. All of the acting nominees were white. And rock pointed out thahas happened many times in the past 88 years. Neilson says the 34 million eight years. George kennedy won an oscar in 1968 for his role in Cool Hand Luke and fixture in all four airplane movies and showed f his comedic side i ithe naked gun. George kennedy died yesterday. He was 91. Today, the fda said it is issuing its strongest warning about essure, an implantable permanent contraceptive device used byby 750,000 womeme some have complained of chronic pain and bleeding. The fda ordered the manufacturer, bayer to conduct a safety study and stopped short of removing the device from the market. Thcbs overnight news will be right back. Woman what does it feel like when a woman is having a heart attack . Chest pain, like theres a ton of weight on your chest. Severe shortness of breath. Unexplained nausea. Cold sweats. Theres an unusual tiredness and fatigue. Unusual pain in your back, neck, jaw, one or both arms, even your upper stomach, are signs youre having a heart attack. Dont make excuses. Make the call to 911 immediately. Learn more at womenshealth. Gov heartattack. While i was on a combat patrol inaqubah, iraq, a rocketpropelled grenade ok my arm off at thehehoulder. I was discharged from the army, and ive been working with the Wounded Warrior project since 2007. Warriors, you dont have to be severely wounded to be with the Wounded Warrior project. We do have a lot of guys that have posttraumatic stress disorder. Being able to share your story, i guess it kind of helps you wrap your mind around what did happen over there. My name is norbie, and d s, i do suffer from posttraumatic stress disorder, today president obama presented the medal of honor to a 36yearold navy seal from ohio. David martin has his story. To call edward buyers a combat veteran doesnt come close. Reading your uniform correctly. Five bronze stars, two purple hearts. Correct. How many combat tours have you done . I have none nine combat tours. In 2012, member of seal team 6 he was sent to rescue a man kidnapped by the taliban. As they approached the building the point man saw they had been detected. He saw a guard come out of the door. He shot him. And we started sprinting toward the door. Reporter the pointman, Nicholas Checque, went inirst. He was shot and dieded second person in. Entered into the room. I saw another enemy standing there with a weapon. I shot him. I saw a person moving across the floor. Didnt know whether or not that person was the american hostage or, if he was an enemy. So i moved down toward him. And i was able to get on top of him. When he heard dr. Joseph call room. Thats when i shot the person i was on top. Jumped off him. And on to the doctor, three or five feet away. Why did you jump on the doctor . We did that. We are in body arm ore. Want to protect him from any other potential threats. When i dididhat. I realized there was an enemy within arms reach. Of where we are laying. And so i was able to hold him against the wall, by grabbing him around the throat. And that was, gave enough time for our teammates to get in there and to take care of that ththat. When you say take care of the threat . How did that work . Our teammates came around and, they shot him. Reporter you were holding him by the throat a