Heres major garrett. Reporter for the first time donald trump sounded hesitant about his path to the nomination. I dont think panic is a word that id use, but you know, sure, id like to stay on top. Im going to do whats right. If i dont make it, thats okay. Ill go back to having a good time and building a business. Reporter trumps caution is consistent with what he told us in early august, when his poll numbers were rising. The only thing that can really drive me out, if my numbers drop down. Im a realist. Reporter retired neurosurgeon ben carson is embroiled in the kind of controversy usually reserved for trump for saying this on sunday about the possibility of a muslim president. I would not advocate that we put a muslim in charge of this nation. I absolutely would not agree with that. Reporter the u. S. Constitution says no religious test shall ever be required as a qualification to any office. But carsons comments could appeal to part of the republican electorate. According to a gallup poll earlier this year, just 45 of republicans say they would support a muslim gop nominee. We need this question. Reporter the topic arose after trump refused to correct a questioner last week when he falsely accused president obama, a christian, of being muslim and not an american. Thank you. Its my pleasure. Reporter florida senator marco rubio, who jumped eight points in the cnn orc poll, urged republicans to turn the page. He was born in the United States. Hes a christian. Hes the president of the United States for the next year and a half. And were going to move on. Reporter rubios campaign picked up a top walker organizer in New Hampshire even before the wisconsin governor dropped out. Scott, over the weekend Close Friends urged walker to shake up his top campaign staff, focus on iowa and ride out this tough spot. Instead the governor stunned his most loyal financial backers and quit. Major garrett in the washington newsroom this evening. Major, thank you. On the democratic side Hillary Clinton remains the frontrunner, up five points in the past two weeks over Bernie Sanders and possible candidate joe biden. Will Vice President biden get in . Heres nancy cordes. Its not like i can rush it. Reporter in an interview with the catholic magazine america Vice President biden said hes still deliberating and knows time is running out. Were just not you know, its not quite there yet. And it may not get there in time to make it feasible to be able to run and succeed because there are certain windows that will close. Reporter but his increasingly antsy supporters in the Draft Biden Movement insist he is inching toward a bid. Over the weekend some backers speculated bidens wife, jill, might be the one with cold feet, prompting her spokesman to tell cbs news and others of course dr. Biden would be on board if her husband decides to run for president. I think everybody just ought to give him the space to decide whats best for him and his family. Reporter on face the nation sunday clinton said shes waiting to see what biden does just like everyone else. This is such a personal decision. And the Vice President has to sort this out. Reporter theyd be fighting over the same pool of voters. The latest cnn poll finds that if biden does not jump in nearly all his supporters would back clinton. Democratic strategist steve mcmahon. At the end of the day democrats like both of these people. Democrats love both of these people. They agree on almost every issue. But what democrats want more than anything is to protect the gains that weve made over the last eight years, whether its affordable care, whether its economic progress or other things that the Obama Administration has done. Reporter and so clinton is spending the next two days campaigning not just to protect obamacare but to expand it with new caps on drug bills. As for biden, scott, one Party Insider told me the only true deadline is the primary filing deadline in early states, and thats not until late november. Nancy cordes, thank you very much, nancy. Today we saw more evidence of russias military buildup in support of assads dictatorship in syria. Satellite photos show russian fighter jets in eastern syria, and david martin reports the russians have deployed dozens of jets and helicopters. There is concern that they may target rebels that the u. S. Supports or come in conflict with american planes that are bombing syria. The exodus from syrias civil war is behind the refugee crisis in europe, and today hungary posted ads in middle eastern newspapers warning refugees that they face prison if they enter illegally. Mark phillips reports more borders were shut today. I want to go to austria. Reporter this is what happens when youre late for the refugee bus at the border crossing. You are a human or not . Now. Answer me now reporter the stragglers from the latest wave of migrants trying to get to western europe through slovenia have discovered its closed. We dont like to go back, please. Reporter slovenia only agreed reluctantly, amid harrowing scenes, to allow the thousands who had crushed up against its borders to pass through. And then only on the condition that they move straight on to austria, germany and points north. Now police have sealed off the frontier again, and the migrant border camp is being dismantled. Another day, another fence, this one being put up by slovenia, closing a route the refugees have been using the past few days. The message were full, enoughs enough, dont come. The refugees agree they dont want to be here either. Some were so desperate to get onto a train leaving croatia they didnt wait for an invitation, breaking through police lines and scrambling through windows. Fights broke out. Go to the back of the line. No fights. Dealing with the crisis on the ground like Francesco Rocca of the red cross arent holding out much hope for a quick solution. This is something that must be solved. This week we will have again another meeting. We are waiting. Every week there is a highlevel meeting but there is no response from that meeting. Nothing happens. Reporter nothing happens because the arithmetic doesnt add up. If you take the numbers of all the migrants that various European Countries have agreed to accept, that still doesnt account for the hundreds of thousands who are already in europe. And scott, more are coming. Mark phillips with the refugees tonight in zagreb, croatia. Mark, thank you. History is made at the emmy awards, but why did it take so long . And the pope inspired her to give a neighbor a tremendous gift. Continues. Weve been changing things up with ky love. Oh yeah. Its a pleasure gel that magnifies both our sensations. It gives us chills in places weve never gotten chills before. Yeah, it makes us feel like. Dare to feel more with new ky love. 130 yards now. Bills got a very tough lie here. Looks like we have some sort of sea monster in the water hazard here. I believe thats a kraken, bruce. It looks like hes going to go with a nine iron. That may not be enough club. Well hes definitely going to lose a stroke on this hole. If youre a golf commentator, you whisper. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. Its what you do. The Television Industry has been awarding emmys for nearly seven decades, but last night viola davis became the first black woman to win for lead actress in a drama. Only six others have ever been nominated. After davis made history, she sat down with ben tracy. I cant seem to get there no how. I cant seem to get over that line. Reporter using the words of harriet tubman, Viola Davis Hollywood and made history. The only thing that separates women of color from anyone else is opportunity. Reporter this was a moment 67 years in the making. 67 years, yeah. Reporter what did you want people to take away from your speech . Women of color, actresses, we sit around, we talk about it all the time. We want to get past that line. We want people to know weve been in the game for 20, 30, 40 years, and we want the same opportunities. Its not like theres been a plethora of leading actress roles and you just havent recognized our talent. Theres been nothing. Reporter just 13 of female characters on television are africanamerican. 78 are white. How to get away with murder. Reporter davis won the emmy for her role as Analise Keating on the hit show how to get away with murder. In one memorable scene last season she removed her wig and stripped off her makeup. Why is this role so unique for a i know women like analise in my life that dont necessarily fit the mold but who have a very colorful sex life. But i simply have not seen that on the screen. Reporter yet she thinks this could be a breakthrough year. You let me be me. Reporter fellow black actresses uzo aduba and regina king also took home emmys. Its in the passing of the baton that gets you to that finish line, but its just your leg of the race. Its not the whole race. Reporter and viola davis is rooting for those who are still running. Ben tracy, cbs news, los angeles. One of the most familiar faces on television the past 60 and his story is next. The former owner of a georgia Peanut Company was sentenced today to 28 years in prison for a salmonella outbreak. Nine people died in 2008 and 2009 and hundreds more got sick. A federal jury convicted Stewart Parnell of knowingly shipping contaminated Peanut Butter and faking the lab results. One of the stars of televisions golden age has died. Jack larson, known to generations of American Kids as jimmy olsen. Up in the sky. Its a bird its a plane its superman olsen was a Young Journalist for the daily planet in the 1950s superman series. Have you got any ideas, chief . Youre supposed to be a reporter. You get the ideas. And dont call me chief. Olsens main role was to provide someone for superman to rescue or to serve as a comic foil. Ive got it, chief. Ive saved the daily planet. What is it this time, olsen, pictures of get the cat out of after the series ende idea of father john enzler, president of catholic charities. It can be a major sacrifice, but it doesnt have to be. Exactly. So that for some people it might be im just going to do im going to help out by raking the leaves for my neighbor twice during the fall. I call this a toe in the water idea. Put your toe in the water of service. You might get up to your knees pretty quickly. Reporter at st. Mathias Catholic School in lanham, maryland the students decided to launch a food drive. 11yearold Jaylene Sotelo and 9yearold ignacio joy say they were inspired by francis. Because of all the good deeds hes done. Reporter why do you like pope francis . Because he loves the poor. Reporter father enzlers goal is 100,000 pledges by the time the pope arrives, and he just might make it. As for christine heidt, her plan was to give her kidney to anyone who needed it. But it turns out through what she calls divine intervention that shes a match with someone in her own parish who desperately needs a kidney. In life there are times are times youre going to receive. And those times that you risk the greatest are when your life will change the most. Reporter theres no greater gift to oneself, she says, than giving hope to someone else. Chip reid, cbs news, cumming, georgia. Thats the cbs overnight news for this tuesday. For some of you the news continues. For others check back with us later for the morning news and cbs this morning. From the Broadcast Center in new announcer this is the cbs overnight news. And welcome to the cbs overnight news. A look at the people and events shaping your world. Im don dahler. Pope francis arrives in washington today to begin his historic pilgrimage to the United States. Hes got stops planned in new york city and philadelphia, where hundreds of thousands are expected to greet him at every turn. Its the pontiffs First Time Ever in the u. S. , but other popes have made the trip before him. Cbss chip reid begins our coverage from the National Basilica in washington. Reporter this will be the tenth time a pope has set foot on u. S. Soil. For pope francis of course it will be his first. But this could be the most earthshaking of them all. The plane on the ground. It just hit. Reporter in 1965 pope paul vi made a historic landing in new york. Pope to set foot upon your land blesses you with all his heart. Reporter he was cheered on by millions as he made his way through manhattan. The pope is in the General Assembly hall. Reporter where he addressed the United Nations and met with president lyndon johnson. The popes enthusiastic reception was a sign of changing times. For many years anticatholic sentiment had been widespread in the u. S. , fueled in part by fears that a catholic american president would take orders from the vatican. That began to change when john f. Kennedy affirmed his belief in the separation of church and state in a Historic Campaign speech in 1960. I do not speak for my church on public matters, and the church does not speak for me. Reporter father thomas reese is with the National Catholic reporter. Anticatholicism in a sense died with john kennedy. John kennedy became an american hero. Anticatholicism to rest. Reporter more than a decade passed before another pope visited the u. S. In 1979 Pope John Paul ii traveled to six cities and delivered over 50 speeches and sermons. The final stop was in washington where he visited the white house by invitation of president jimmy carter. Only a devout baptist president could invite the pope to come and visit the white house. Was he well received or was there still some fear of a pope coming to washington . The church was changing by that time, and americans in general, who were very anticommunist, saw the papacy, saw the pope, saw john paul as an ally of the United States against communism. Reporter in a 1987 tour of america Pope John Paul spoke on human rights. In San Francisco he blessed catholic aids patients. In detroit he preached against abortion. A message he continued to deliver in a 1993 address in denver and his final address in st. Louis in 1999, where he visited with president bill clinton. In 2008 Pope Benedict xvi made a sixday tour of america. During the trip he highlighted the Sexual Abuse Scandal involving catholic priests in the United States. During a visit to the white house president george w. Bush hit a lighter note. Happy birthday to you he and First Lady Laura Bush celebrated Pope Benedicts 81st birthday. As pope francis makes his way to washington, he will be making history as the first pope to address the u. S. Congress. Father reese says his message could also ruffle some feathers. This pope is concerned about the poor, the environment, and is he critical of libertarian capitalism . So hes not afraid of challenging people. And sometimes when he challenges people they get mad. You expect him to challenge congress . I dont see how he cant. Reporter according to one recent major study, the number of catholics in america has been steadily decreasing in recent years. But u. S. Catholic leaders hope this visit by pope francis will help turn that trend in the other direction. Pope francis is the only world leader who plunges into crowds like this. He demands freedom. And he explained why when we visited the vatican last week. What is your goal for america . [ speaking spanish ]. Reporter to meet people, he told us. But his desire for freedom is exactly what worries the man who stands at the right fender of the father. Erst britenmozer is a sergeant in the 500yearold swiss guard, the popes bodyguards. We cannot be like a wall around him. To be a pastor, he needs the contact with people. Its very personal, very human, and for us its an awesome experience. Reporter the guard is the oldest and Smallest Army on earth, a force of 110. All swiss, all catholic, all pledged to give their lives. There are guards that you cant miss and guards that you cant see. The ones in plain clothes with automatic weapons. In the United States the secret Service Often says to the president s staff, look, we know you want to do that, but we cant do that. Do you ever say that to the pope . No. We tried. At the beginning we tried. But he was saying always, he always had the last word. We were discussing about security and safety problems. But he needs to do also his ministry as a pastor. The coast guard is out in force in philadelphia. Patrolling the delaware river, ready to restrict boat traffic captain Benjamin Cooper took us on patrol. We will have this area shut down. Well have coast guard vessels here. We will screen vessels. Well intercept them. Well escort them through once we determine if they are safe. Reporter from the water to the streets, planning and construction have been under way for about eight months. It is so detailed that the secret service developed this 3d virtual map of every location the pope will visit. And secret Service Agents have traveled to the vatican to study the popes movements, says david beach, the secret Service Agent whos in charge of all security in the city. What was the goal there . This pope likes to get out and mingle. The vatican folks i think wanted us to see that and see how they worked and to make