Terrorist on the attack. From abc news, this week with George Stephanopoulos begins now. Good morning. What some called a summer fling still going strong, donald trump drawing record crowds. Hes going to join us live in a moment. But we begin with that brewing intrigue on the democratic side. Vice President Biden calling populist star Elizabeth Warren to washington for a secret meeting. Jonathan karl tracking the latest. Jon, this is the strongest sign that biden is taking a serious look at this race. Reporter it sure is, george. This is a meeting between the two democrats who could potentially pose the greatest threat to Hillary Clinton if either one of them decided to one. Now, warren, of course, has emphatically ruled out running. Biden is seriously considering it. Its hard to imagine anything that would give him a bigger initial boost among base democratic voters than support from warren. Warren, by the way, has been decidedly cool about Hillary Clintons campaign. Just listen to this clip from a recent interview with wbz in boston. Was it a mistake for your party to anoint her as the nominee so early on . I dont think anybodys been anointed. So, biden clearly sees an opening with that lukewarm comment. Reporter absolutely and especially in recent polls on the question of honesty and trustworthiness. Hillary clinton is suffering largely as a result of this email controversy. Look at this recent quinnipiac poll nationally. Only 37 say that they trust Hillary Clinton. 57 say no. When you look at bidens numbers theyre almost exactly the reverse. A Strong Majority say that they find biden honest and trustworthy. The question is, would he be willing to make that case if he rungs . What about timing. I talked to one supporter this week who said it looks like biden is saying hes about 60 40 to run and theyre feeling some pressure to make an announcement soon. Reporter what biden himself is telling people, i am told, is that hes got quite a bit of time and says the real deadline is that first democratic debate which is october 13th, but one very close by, an adviser, told me yesterday that he believes that biden has to do much quicker, has to make this decision much quicker. He starts, of course, way behind. Has no national organization. No fundraising. If hes going to run he has to get moving. Jon karl, thanks very much. Now the republicans and donald trump dominating another week. There he is in alabama late friday drawing the biggest crowd of his campaign. He is standing by live after tom llamas reports on how his rivals are countering the energy his opponent has unleashed. Reporter if there was any doubt about if donald trump was dominating the 2016 race, take a look at his rock star reception friday night. A stadiumsize crowd. Officials saying 30,000 on hand for the gop frontrunner. We need to have our borders. We need to make great deals. Reporter this rally in alabama a strategic choice for the Trump Campaign in an early primary state. A new poll shows him now beating jeb bush in florida. And the billionaires new immigration plan, the focus of the campaign. You look at chicago. You look at baltimore. You look at ferguson. You look at a lot of these places. A lot of these gangs and the most vicious are illegals. Theyre out of here. First day i will send them people we those guys are out of here. [ cheers and applause ] reporter the question this morning, how does the rest of the field react . Some like jeb bush unleashing tough shots at trump. Theres a big difference between donald trump and me. Im a proven conservative with a record. He isnt. Reporter bushs super pac trying to highlight his previous left leaning views flying this banner saying, trump 4 higher tax, jeb 4 prez. Carly fiorina joining in, as well. Im not sure donald trump is a republican. Reporter the alternative, to stay positive. Put dr. Ben carson in that camp. I like people who are willing to say what they believe. Reporter then theres scott walker. On trumps plan to end birthright citizenship for undocumented immigrants, he first agreed. Yeah, absolutely. You should end birthright citizenship . Yeah, to me its about enforcing the laws in this country. Reporter then backed off. Im not taking a position on it one way or the other. Reporter the trump juggernaut still leaving top tier candidates on unsure footing. For this week, tom llamas, abc news. Thanks to tom llamas for that. Now lets talk to the man himself. Donald trump joins us by phone. A lot to talk about this week, mr. Dump, but i wan s to begin with that news about joe biden. Some news he may be considering the race. Meeting with Elizabeth Warren. May be getting in. Would he be a tougher opponent than hillary . I dont think so. I think theyre the same. I think hillary may be damaged because of the email thing. You look at general petraeus, whats happened to him. How hes been destroyed and what he did was a fraction of what shes done, but i dont know. Assuming she could get over that which i just dont know how she possibly can but assuming she could, i would say it would be pretty equal. Okay, but lets talk about you right now and your new immigration plan that youve been talking about on the stump. All of your opponents having to react to it at this point. Jeb bush, one of the people who reacted to it saying its going to cost hundreds of billions. From the American Action conservative group, they say the federal government would have to spend roughly 400 billion to 600 billion to address the 11. 2 million undocumented immigrants. Each immigrant would have to be apprehended, detained, legally processed, transported to his or her home country, in turn this would shrink the labor force by 11 million workers and reduce real gdp by 1. 6 trillion. Are you willing to pay that price and where will you get the money. First of all, theyre wrong and jeb bush is a low energy person. He would never be able to do it. He says they come as an act of love. An act of love. People coming and many of them you look at whats happening with the crime, many of them are really causing tremendous problems, and they would be out really fast, immediately, first day we start that movement. We need a wall. We have to get a wall. We need Great Security and were going to have a wall that will not let people in. George, by the way, legally if youre legal, you can come in and well but let me press you on the cost right there, mr. Trump. Theyre saying 406 billion and it would require Big Government apparatus to take everybody down. If you dont think those numbers are right, how much is it going to cost, and where are you going to get the money . Its costing us 130 billion a year and thats peanuts compared to what the real cost is, george. The way we have it now. You have so many illegals. We dont even know how many illegals. I hear 11 million. I hear 30 million. The government has no idea. We have lost control of our country. Weve lost control of our borders. The government has no idea how many illegals are here. Ive been hearing 11 million for five years then i heard 30 million. Nobody has any idea. So if theres no idea how are you going to round them all up, where are you going to get the money . Where are you going to get the forces . Exactly how are you going to do it . What are the specifics here . George, its called management. The first thing we have to do is secure the border but its called management and well get people back in, the really good ones were going to expedite it so they get back so they can at least come in legally. You keep declaring how youre going to do it but you dont say how. Excuse me, george . You declare how youre going to do it but you dont say how. George, im telling you, its called management. You can do this and we can expedite the good ones to come back in and everybody wants that. But they have to come in legally. We have a country, we have to have were a country of laws. Were a country of borders. How can you have a country without a border . How can you have a country without laws . We have to do it and, by the way, what you said in your piece initially is the gang members. You look at the gang members in baltimore, chicago, in ferguson, these people, a lot of them are illegals. These are rough dudes and were going to get them the i understand that you think its a huge problem but i dont its a huge problem but i dont hear specifics on how youre going to do it. My specifics are very simple. Im going to get great people that know what theyre doing. Not a bunch of political hacks that have no idea what theyre doing appointed by president obama that doesnt have a clue. I mean the man doesnt have a clue. People are walking across the border right now right in front of these great people that we have. We have wonderful Border Patrol people. They can do their job but theyre not allowed to do the job. People are walking right into our country totally un nobody even knows where they come from and they walk past guards who are told not to do anything. Do you expect neighbors to start turning in neighbors . I dont know whats going to happen. I can tell you this, we have to have a country were a country of laws and we have to do it that way, george. Theres nothing we can do about it if were going to stand as a country. Theres no choice. We have no choice. We have to do it properly. Now, the candidates that are running against me like jeb bush, he has no clue. Hes never going to be able to do anything. Just look at whats happened with him over the years and whats happened with the last thing we need is another bush. But scott walker changed his mind now because he keeps going back to his pollster and his pollster says trump has a good idea, oh, trump has a bad idea. Oh, no, wait a minute. Trump has a good idea. These people dont know what theyre doing, george. Theyre politicians. They dont know management. I get the best people and we will do it properly and humanely and get the good ones back in. I still havent heard the specifics. I know youre going to do that you will, george, dont worry, youll hear it. But ill move on right now. Scott walker Good Management and its called great people. You know, you talk about jeb bush just a minute ago and say hes a low energy guy. Talk about an article turned out in new York MagazineGabriel Sherman talked to a friend of you, informal adviser and said you called him and warned that friend if im going down, then bush is going down with me. Hes not going to be president of the United States. Did you say that to totally false. I dont know where this comes from. Im hearing it for the first time. I dont mind jeb bush. I think hes a nice person but i dont think he has the energy. You need energy for this job. You cant be soft and we need were a country thats in trouble. We owe 18 trillion. Its going to be up to 20 trillion in a very short period of time which is a very, very bad number when you hit over 20. And we need a person with a lot of smarts, a lot of cunning and a lot of energy, and jeb doesnt have that. I think hes a very nice person. If he became president , if he became president , good luck. Its another bush. Its going to be the same old story. Let me ask i have nothing against jeb bush. I think hes a very nice person. Let me ask you a more philosophical question. Which failure in your career taught you the most . What did you learn from it . Ive had very few failures, george, and if i do have a failure, i try to make it a success. For instance, if a market collapses in the midst of a big construction job, which ive had happen a number of times in a number of times i make those more successful and go back to the bank and fight with them, negotiate, do all sorts of things and have had deals that should have been disasters and would have been more most people and have become great successes. Actually more successful than if the market had stayed good, but i would say this more than anything else, you have to learn from tough times, and ive learned a lot. You talked about scott walker just a minute ago and he drew a lot of headlines this week talking about his efforts to try and maybe outtrump you, one from the new york times. Willing to step away in iowa walker adopts a trumplike stance. The Washington Post, fading in the polls walker aims to attract trump supporters. Reuters in a bid to Jumpstart Campaign walker tries to channel trump. National journal how walker plans to win back donald trump supporters. Are you worried . Well, im not worried because the state is really in trouble. I mean, its a fantastic place. I love the people of wisconsin but if you look at whats going, they have the 2. 2 billion deficit. They were supposed to have a surplus of a billion and have 2. 2 billion. Theres tremendous divisions throughout the state. The roads arent being built properly. You know, he stopped a lot of work because he doesnt want to raise taxes, so instead of raising taxes hes borrowing to the hilt and the state is very overlevered and its number 38 out of the states. Its ranked number 38. Thats not good, so, you know, im honored that he wants to copy me, and hes a nice man. He was up i gave him Campaign Contributions when he was running for governor. I like him very much, but his state has not performed well. We need somebody thats going to make it perform well. This country perform well, and im the one to do it. I will do a great job, and people are seeing that, and its being reflected in the polls. I mean reuters just came out with a brandnew poll yesterday, 32 for trump. I mean, people want to see real change, not obama change. He used the word change. His change was a bad change. They want to see proper change. They want to see great change. They want to see our country be great again. George. Donald trump, thanks for your time this morning. Thank you very much. Okay, lets give scott walker a chance to respond. Right now he joins us this morning from alabama. Governor, thanks for joining us this morning. You heard donald trump say wisconsin is not performing. Your response . Well, hes using the talking points of the democrats. Those talking points havent worked in the past 4 1 2 years as we won three elections in four years, not just with republican support but with a huge margin amongst independents and even some discerning democrats, why, because we took a 3. 6 billion budget deficit and fixed it and did it while cutting taxes by billions of dollars. Our roads are better and our schools are better. Our state is better. Those are the same talking points the democrats used and didnt work in the past. They wont work now but the one thing i do want to clarify is i do think that there is some real frustration out there. Its why you not only see his numbers up you see some of the other candidates who have not run for office before theyre angry at washington. Heck, im angry at washington and angry at my own Party Leadership who told us they would repeal obamacare and dont see a bill on the desk of the president. I think thats where the real frustration is. In the end if people want someone to fight but not just fight but win and get results and do it without compromising commonsense conservative principles, im the candidate. It sounds like youre following through on what the Washington Post reported had week. They reported on a Conference Call with your fundraisers who said you had to do better in protest, policy and passion. Is that right . Yeah, i think theres no doubt about it and want to see what they saw at the iowa state fair. We had protesters, one who tried to come up on the stage and i said, im not intimidated by you or the left or not intimidated by the special interests in washington and im certainly not intimidated by the Big Government union bosses but early on our state assembly was great but a few of our state senators, some of whom had been in leadership did not want to do the big, bold reforms we did and ill take anybody on including the leadership of my own party in washington if thats what it takes to do what is right for the American People. Also been taking on this question of birthright citizenship and the 14th amendment. Let me put the first sentence of the 14th amend mement up on the screen right now. All persons born or naturalized in the United States and subject to the jurisdiction thereof are citizens of the United States and of the state wherein they reside. Do you support the first line of the 14th amendment . Well, george, let me step back for a second and tell you an interesting story. Last month i was in a small town in iowa called plainville. In fact, i lived there for awhile as a kid, and a family came from waukesha to confront me. The father was upset i was 1 of the 25 governors that went to court and stopped the president and i told that father, in a very tense situation with the media all around including some from abc news and others out there, i told that father i felt bad for him and his family. I feel bad for families like that but i told them that this president had said i believe some 22 times, 22 times before he did what he did last november that he couldnt do it. He said that he was the president , not the emperor. That he wasnt above the law, and then he went out and changed the law by his actions. It took me and 25 or, excuse me, 24 other governors to stop him in court. The problem here, we need to address the root problem, the issue, which is we need a president who is going to secure the borders, not just give lip service to it like weve seen over the past couple of decades. Secure the border and enforce the laws. My point all week has been and continues to be as it was last month, until we address those core problems well were not addressing the real issue and americans are right to be upset. I understand thats what you feel we have to address but this is a simple yes or no question. Do you support that line of the 14th amendment . Well, i said the law is there and we need to enforce the laws including those that are in the constitution. My point is having this debate about anything else when we dont have politicians who are committed to actually securing the border and enforcing the laws, which means very simply in our country everify. Making sure that every employer ensures that the people working for them are legal to work in this state in this country. That will resolve the problem were t