I did not just wake up one day and say, oh, my goodness, workers are being mistreated reporter while sanders stumped in rural nevada. Let us go forward together. Eporter the state w wl be the first test of their appeal to minority voters. Nevada is more than a quarter latino. Clinton has tried to blunt sanders momentum here by portraying him as one dimensional, focused only on income inequality. What do you think of secretary clinton cawlingsgs you a oneissue candidate . Obviously, she has not been listening to my how far and a half speech. Reporter both are campaigning with one eye on the larger South Carolina primary democrats will hold a week from tomorrow. She worked to reform juvenile justice in South Carolina, exposed racism in alabama schools. Repepter clinton released a new ad today narrated by endorsement of the highest ranking African American in congress, South Carolinas james clyburn. And i believe that the future of the Democratic Party and the United States of america will be best served with the experiences and knowhow of Hillary Clinton as our 45th president. Reporter clyburn had been planning to remain publicly neutral in the primary, but he changed his mind, scott, after sanders trounced clinton in New Hampshire and pulled even with her here in nevada. Pelley the nevada vote tomorrow. Nancy cordes, thanks very much. Today, Major Garrett talked with nald trump and asked him t same queueion that we asked clclton yesterday, does he subscribe to the truthtelling standard that jimmy carter set in the 1976 campaign when he said, i will never lie to you . I would be very, very satisfied just to say i dont lie, and, you know, she sort of fudged it a little bit. Understood what she was saying. I would much r rher say i dont e. You know, one of my problems is im straight. I tell it straight. I tell it like it is. Reporter we interviewed donald trump before a noon rally in myrtle beach. The crowd of more than 5,000 began arriving at 6 00 a. M. Do you ever worry if youre elected president ,ul let them down . I will be so disappointed in myself. There are so many things to do. O. Our countnt is so far behind. We owe 19 trillion. Were going to start chopping away at that. No, i dont want to let those people down. Reporter do you feel that as a burden, though, if you become president . Its a burden. It makes it tougher for me. I dont want to let these people down. Reporter a day after calling the pope disgraceful, trump s stened hisis tone. W wl, i think he was in a not as severe as the media let it known. But this morning he was so nice and i really appreciate it. Reporter is this an issue in anyway, illegal immigration. Look, mexico is ripping off this country, theyre ripping us off b bween the druru trade and the illegal immiation and they said to the pope something and he went out with it. But he didnt know the United States stand. He didnt know where we are or our people but he was terrific. Reporter we also asked about a september 2002 radio where trump said he backed the war with iraq despite saying the opposite on the campaign trail. You could see t tt was a very weak, like that w w theirst person that ever asked me about the war. Un, im a businessperson, so theyre not asking me about the war. Then shortly after that, i started saying i started really studying it and looking at it. I didnt like it because youre going to ruin in the balance in the middle east, which is what happened. Reporter trump also said he does not believe the most recent poll here showing the race tritenini with ted cruz. Scott, trump said he expects to win and if the republican field shrinks in the aftermath intends to pick up a good portion of the pelley and the vote in South Carolina is tomorrow, as well. That poll major mentioned shows trump with only a fivepoint lead over cruz, but other polls show a wider margin for trump. So the real battle is for second place, the trump alternative. And with some insight into that, John Dickerson is joining us, the anchor of face the nation. John. Scott, ted cruz has been second in the polls to be the first trump alternative. And the electorate in South Carolina looks like iowa, state where he won,ith about the same number of p pple who identify as very conservative and evangelical christians. Marco rubio, trying to come in second after his fifthplace finish in New Hampshire, needs either to come in second or to come in a close third to make his case that hes the mainstream answer to donald trump. For jeb bush and ben carson, this is a makeorbrere. Bush brougug out his mother and his brother to campaign for him this week, and if he has a will start to come down. Thats true, also, for carson. John kasich is not expected to do well. His game plan relies on midwestern states like michigan. He just has to hope his rivals dont do too welel in South Carolina which would make it hard for him to stay inhe conversation. Pelley the winnowing continues. Thank you. Justice department asked a federal judge today to force apple to unlock an iphone that belonged to one of the San Bernardino terrrists. Apple says that if it did, all of its customers would lose their right to privacy. Jim axelrodod has discovered there are many more of theseattles an you might think. Reporter the battle over access to the San Bernardino shooters cell phone is far from an isolated case. The manhattan d. A. s office said its investigating cases involving 175 apple products with encryption similar to syed from homicide to child sexual abuse. Cyrus vance jr. It is very difficult to explain to a victim of crime that we cannot get the evidence that may identify the individual who committed the crime because the Cell Phone Company and designer has decided that they know better. Reporter apple c. E. O. Tim coco says hes fighting the order to devise a way past the iphones encryption system to keep his consumers safe. But the reality is if you put a backdoor in, that backdoor is for everybody. Reporter john miller is Deputy Commissioner of the n. Y. P. D. He says apple could develop a vote codeto break into the phone, get the information it needs, then destroy it. Tim cook says, im doing this for the safety of my customers, meaning so that we have an impregnable phone. I have to ask how many people who died on the floor in San Bernardino or in paris had iphones in their pockets as they were being killed by the terrorists . They are tim cooks customers, too. Applplexecutive told cbcb news, if we break this phone at 8 00 a. M. , destroy the code, then at 10 a. M. , we get another subpoena. But why is apples cooperation necessary at all . Mike morrell is the former number two at the c. I. A. Isnt there somebody who currently works for the c. I. A. Or the n. S. A. Whoould do whatat the government wants apple to do . Theres been so much advance in the last year, 18 months in the ability to protect information in these kind of devices, that the government has simply fallen behind in its capabilities. Reporter the next chapter in the legal battle in this case will unfold march 22. That is when a judge wilil hear arguments from bothth sides in a federal government in california. Pelley jim, thanks very much. American warplanes bombed an isis camp in libya overnight. About 40 people were killed, likely among the dead air, tunisian suspected of plannini major terrorist attacksttacks in tunisia last year. A limited ceasefire was supposed to quiet the guns today in syria. It didnt. The fiveyearold civil war is even more chaotic because some rebel groups backed by the United States are now attacking each other. Holly williams has our report. Repepter this ishe first videdeevidence that u. S. Backed groups are fighting each other in syria. It appears to show Syrian Rebels using an americansupplied missile against kurdish fighters, who are also supported by the u. S. The two groups are now battling for the same territory inn northern syria. Meanwhile, a car bomb i the turkishapital, ankara, on wednesday has brought tensions ally turkey to a breaking point. The attack on a military convoy killed 28 people and turkeys blaming a Kurdish Group. The same group that americas backing ininyria in the fight against isis. Today, the turkish president recep tayyip erdogan, demanded that america declare the Kurdish Group a terrorist organization. The Kurdish Group denies any involvement in the bomb, but turkeys anger with the u. S. Could have big ramifications for the fight against isis because, scott, the u. S. Led coalition uses a turkish airbase to launch strikes against isis in syria. Pelley holly williams, thanks. The show of respect was unanimous today for Supreme Court associate justice antonin scalia. Hour after hour,r, mourners filed past his casket in the great hall of the court. Prayers were led by hiown son, heres our chief Legal Correspondent jan crawford. Reporter Justice Scalia arrived at the court for a final time with his former law clerks there to see him up the steps of the institutionon he served for 30 years. His family looking on. Waiting inside the great hall were his fellow justices. My brothers and sisters. Reporter the service was brief and moving. Schaes son, father paul scalia, led the prayersarchs his wife, maureen, and their eight other children and most of their6 casket. We ask this through christ our lord. Reporter the justices and their spouses stood silently, their faces etched in grief. None of the eight justices have served on the Court Without the largerthanlife scalia. His sudden death will upend the decisions. As the president gets ready to nominate his successor, he took friday afternoon to pay his respects with the first lady. The couple paused as they left the great hall to stand before a painting of scalia. Earlier in the afternoon, two of the leading candidates to replace scalia, federal Appeals Court judges patricia millett, and sri srinivavan, also paid respects. And throughout the day, long lines formed as members of the public waited to go inside, a quiet moment far removed from the brewing battle over the nomination. The father, and the son. Reporter scalias death leaves the court divided 44, its future hanging in the balance, a family without its patriarch. Now, the president and the first lady also met privately with some members of scalias family. He will not be attending the funeral tomorrow, scott. The Vice President gl instead. Pelley jan crawford at the court for us tonight. Jan, thank you. Well, emotions ran high at a hearing for the teen who used an affluenza defense for drunk driving. And president obama says she well remember harper lee when the cbs evening newsws on a longterm asthma control medicine, like an inhaled corticosteroid. Breo wont replace a rescue inhaler for sudden breathing problems. Breo opens up airways to help improve breathing for a full 24 hours. Breo contains a type of medicine that increases the risk of death from asthma problems and may increase the risk of hospitalization in children and adolescents. Breo is not for people whose asthma is well controlled on a longterm asthma control medicine, like an inhaled corticosteroid. Once your asthma is well controlled, can stop breo and prescribe a different asthma control medicine, like an inhaled corticosteroid. Do not take breo more than prescribed. See your doctor if your asthma does not improve or gets worse. Ask your doctor if 24hour breo could be a missing piece for you. See if youre eligible for 12 months free at mybreo. Com. For your retirement, you want to celebrate the little things, because theyre big to you. And that is why you invest. The best returns arent just measured in dollars. Td ameritrade. Hey, need fast heartburn relief . Try cool mint zantac. It releases a cooling sensation in your mouth and throat. Zantac works in as little as 30 minutes. Nexium can take 24 hours. No pill relieves heartburn faster. Pelley today a judge in infection ruled ethan couch will be in an adult court. He is accused of violating probation after a deadly drunk driving accident. Heres david begnaud. Reporter for maria lemus, every moment she cares for her son, sergio, she feels pain. The 18yearold was left a quadraplegic after riding in a truck driven by ethan couch. Couch crashed the have the vehicle into another stranded vehle. Lemus was thrown out. Its not easy seeing sergio this way as a so, player and now you see him in this place. Its not easy. Reporter outings are rare, but today lemus wanted ethan couch to see her son in a alex is her oldest son. You can try to smile and tell them no matter what happened, youre still here, that you still got dreams of playing soccer, man . Reporter it appeared sergioio lifted h h leg. The family insists he was trying to speak for himself. I just want him back. I dont care about money. I dont care about anything. I just want my son back. Reporter scott, the sheriff said today hes noticed ever since ethan couch was transported to adult jail here in fort worth, the seriousness of the situation and what he did to those people seems more real to him now. Pelley david begnaud, thanks. Well be right back. My brotherrian was my best friend, but when he went to college and struggled with depression, he felt alone. He thought he was to blame and no one would understand. When he finally told me he was hurting, i didnt know what to do. A few months later, my brother took his life. If someone you know is struggling like brian did, find out how to help. What will you say when someone suffering from depression comes to you . Learn more at activeminds. Org. Pelley they dont do one thing but sing their hearts out for us. Thats why its a sin to kill a mockingbird. The writer of that classic line and novel harper lee died last night at the age of 89, a woman radley, preferred to stay inside the small world where she was born, monroeville, alabama. Anthony mason has her story. Reporter whenresident bush awarded her the medal of freedom in 2007, harper lee had published only one novel, but it was a giant. To kill a mockingbird won a Pulitzer Prize in 1961, spent 88 weeks atop the bestseller list, and became an oscarwinning film. Scout. Reporter set in depressionera alabama, its a story seen through the eyes of young scout finch, whose father atticus, defends a black man falsely accused of raping a white woman. What happened to you on the evening of august 21 of last year. Reporter Nelle Harper Lee grew up in scouts world as she described in 1964. Reporter that was the last extended interview lee ever gave. She is the most private woman i have ever known. Reporter friend wayne flint said lees next project was helping her neighbor, trun capote, research a kansas murder for his 1966 book. And i think you could make a very good case for the fact there would be no in cold blood were it not for the research she did. Reporter her only other novel appeared last year, go set a watched man put her back on the topf the bestseller list. All she wanted to be was a chronicler of southern life. Her tale of that time became what many consider the towering american novel of the 20th century. Anthony mason, cbs news, new york. Next. 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