Now, some people claim that no one remembers Barack Obama being born in Hawaii or in kindergarten there. Tomorrow, in part two of his special investigation, Gary talks to people who knew President Obama as an infant, as an American infant. And as we mentioned all along, Gary and producer Susan Chun asked the people that they talked to wherever they went in Hawaii and the dozens of people they talked to, they asked whether they'd also talked to Donald Trump's investigators. The answer in every case was no. In a number of interviews, Mr. Trump has talked about his investigation, but in many of the interviews, he refuses to say much about it. Watch. I have people that actually have been studying it, and they cannot believe what they're finding. You have people now down there... [Crosstalk] Absolutely. ... searching in Hawaii? Absolutely. And they cannot believe what they're finding. You say that you have sent investigators there. Have your investigators been able to unearth anything more that has given your argument credence? I will let you know that at a future date. I will let you know that at a future date. [Crosstalk] You sent investigators to Hawaii and you said -- quote -- They cannot believe what they're finding. [Crosstalk] We're going to see what happens. [Crosstalk] What have they found? That's none of your business right now. We're going to see what happens. Have they found anything? We're going to see what happens. What have you come up with your investigators? Well, I don't want to say that now, but it's going to be very interesting. [End Clip] Well, today, I spoke with Donald Trump . He asked that we leave the conversation uncut. And we absolutely have. Because of time constraints, however, we're running it in installments, two tonight and one tomorrow. I started tonight by asking him about that investigation. Mr. Trump, thanks for talking to us. You have said repeatedly that you have investigators in Hawaii looking into the president's birth certificate. You have said that you're looking into it very, very strongly. That's a quote. In another interview, you said that your investigators -- quote -- can't believe what they're finding. We have had a team in Hawaii talking to everyone from the state Health Department to the school where Obama's mother went to other families who were in the hospital at the same time as when he was born. None of them say they have been contacted by anyone working for you. Well, maybe they're not saying, and maybe they haven't contacted the same people, Anderson. There's a lot of people in Hawaii. And, frankly, it's hard to believe that he doesn't just issue his birth certificate. It would be so easy to do if in fact he has one. And a birth certificate is not a certificate of live birth, which is a much, much lower standard, as you know. But to the investigation, there's not that many people in Hawaii who have knowledge of this birth certificate. We have interviewed the former director of the Hawaii Department of Health, a Republican, one of two state officials who has actually seen the original birth certificate that you're talking about in the Department of Health vault. She says she hasn't been contacted by your people. Isn't that somebody they should talk to if they're there? Well, I've been told very recently, Anderson, that the birth certificate is missing. I've been told that's it not there and it doesn't exist. And if that's the case, that's a big problem. Who told you that? I just heard that two days ago from somebody. From your investigators or... I don't want to say who, but I have been told that the birth certificate is not there; it's missing. And I feel badly about that, because I'd love for him to produce the birth certificate, so that you can fight one on one. I mean, if you look at what he's doing as president with fuel prices and everything else, you can do a great fight one-on-one. You don't need this issue. But I have been told that the birth certificate is either missing or not there. Can you name even one person who your investigators have talked to, just one name? I don't want to do that. It's not appropriate right now. You can't say anybody who they have talked to? Well, it's just not appropriate, Anderson. You wouldn't want to do that either if I asked you that same question. It just right now would not be appropriate. It's too soon. Do you actually, though, have investigators on the ground? Anderson, I told you. And you made two statements at the beginning -- 100 percent correct. It's 100 percent correct. Of course I do. [End Clip] Well, up next, we go point by point with Trump over his claims about the president's birth certificate. As I said, we're not editing this interview at all. Let us know what you think. We're on Facebook or follow me on Twitter @AndersonCooper. I will be tweeting tonight as well. Also tonight, shocking developments in Misrata, Libya, brutal bombardment of civilians by Gadhafi forces. Remember, on Friday, the Gadhafi government was talking about withdrawing? Well, we're going to talk to one of the few Western reporters risking her life right now in Misrata. She tells us they didn't withdraw, they got beaten back and now they're just shelling the place relentlessly. She tells us really stunning stuff of what she's seeing. And later, as William and Kate get ready for the big day, comments made by a palace guard online have gotten him booted from the wedding -- details on that and more live from London. Well, Donald Trump says he's gone from believing President Obama was born here to doubting it to saying Mr. Obama's original birth certificate might show that he's a Muslim, and now tonight for the first time suggesting the document might be missing or totally nonexistent. Republican presidential polling shows a big chunk of GOP voters are either agreeing with him or like what he's brought to the race. We wanted to talk with Trump in depth, though, about his claims regarding President Obama point by point. Michael Bloomberg said over the weekend that he believes Obama was born in Hawaii and that you and other Republicans who make this an issue are making a terrible mistake by pursuing this. Well, I'm a big fan of his and he was a big fan of mine on the same show. He was very nice. And he's like some people that think that they should forget this issue. And I wouldn't mind forgetting the issue. But I would like him to show that he has a birth certificate because a certificate of birth, you can get -- a certificate of live birth, you can get over a telephone. You can get it with a telephone call. But that is the only form that the state hands out. [Crosstalk] That's not right. They issue a birth certificate. That's not true. And the other amazing thing is if I go to your hospital where you were born or my hospital, I can tell you the room number. I can tell you the nurse's name. I can tell you how much my parents had to pay to bring me into this world, a bad day for the world. But I can do all of these things, Anderson. And nobody knows -- do you know his own family is fighting over which hospital he was born in. They have no records. They have nothing. What do you mean his family is fighting over it? His family. His family in Hawaii was arguing over which hospital. They were disputing each other as to which hospital in Hawaii he was born in. And, you know, more importantly, his grandmother was saying that he was born right down the road. And I'm not talking about this country. I'm talking about a totally different country called Kenya, that he was born in Kenya, down the road, in the hospital. Fifty-one seconds go by. All of his handlers are in the room and all of a sudden they're all shouting and jumping up and down. And then she sort of said, I mean Hawaii, after 51 seconds. [Crosstalk] Wait a minute. And he was close to getting the nomination, Anderson, so you had plenty of handlers in that room. It was like bedlam for 51 seconds. That story that you're talking about originated with a doctored transcript of a transatlantic phone call made by a pastor connected to a birther loyal -- the lawyer. This guy filed an edited transcript of the call... Anderson, why did it take 51 seconds for her to change her mind? I have got the tape. I will play -- let me play what you're talking about, so our viewers now. This is part of a court case that this birther guy was trying to make. It got thrown out of federal court, denied on appeal. The caller was saying Obama was born in Kenya. The grandmother actually corrects him and says, no, he's born in Hawaii. No, no, that's not right. She acknowledged it. And then, all of a sudden, 51 seconds later, she changed her mind. Well, let me just play this for our viewers. Well, that doesn't -- let's talk about -- hey, Anderson... Was she present when he was born in Kenya? Were you present when he was born? Yes. She says yes, she was. She was present when Obama was born. Well, whereabouts -- whereabouts was he born? I thought he was born in Kenya. No. He was born in America, not in Mombasa. Do you know where he was born? I thought he was born in Kenya. I was going to go by and see where he was born. Yes. She said he was born in Hawaii. [End Clip] So, I mean, it's through a translator. I mean, it's... [Crosstalk] No, but the first time, it was Kenya. Then all of a sudden, it's Hawaii many, many seconds later. And the room was loaded up with his minions. So, I mean, Anderson, look, cases could be made both ways. The way you solve it is, let him produce the birth certificate, which I hear doesn't exist. But this is a document, though, that the state of Hawaii no longer even recognizes as a legal document. They don't use the document you're talking about. They recognize the certificate of live birth, which is what was the passport office uses. [Crosstalk] If you go to Hawaii -- and you should, because you do a great job -- I'm a fan -- if you go to Hawaii, you get a birth certificate. That's your primary form. A certificate of live birth... [Crosstalk] That's not true. We just did this. We just did this. [Crosstalk] In many states, you can't even get a driver's license with a certificate of live birth. But you can get a U.S. passport. [Crosstalk] You can't get a wedding license, a marriage license. The federal government accepts it. And we did that, Mr. Trump. We just went to Hawaii. We got a birth -- a live -- a certificate. We asked for a birth certificate from a guy who was born the same day as Obama. We took him to the office, and we were given a certificate of live birth. Are you talking about the twins? Are you talking about the twins? No. We're talking about this other guy. Oh. Well, the twins were born and they -- you should find out. They know room numbers. They know all sorts of other things that aren't in any file for Obama. You can't get... It's a real problem, Anderson. You can't get a driver's license in Hawaii with a long form. Look, what I don't understand is why the press tries to justify it. Why don't you find out what's going on? Because he should have a birth certificate. Now, my strength is jobs. My strength is OPEC stopping ripping us off. My strength is China and the manipulation of their currency, because they're taking our jobs away from us. That's my strength. You wanted to start with this. I said it's OK. But, Anderson, he can solve the problem. You know, he spent millions of dollars on this problem with lawyers trying to stay away from it. But wait a minute. [Crosstalk] Millions of dollars. I'm not talking about he spends $2. He spent millions of dollars... Wait. That's... With top, top lawyers fighting this issue. Why doesn't he just give his birth certificate? And I hear the birth certificate is either missing or doesn't exist. And don't forget, his governor, you know, who took a bullet for the party, his governor said he was there when he was born. I mean, give me a break. All right? He was there when he was born. But the governor, the same man, said he saw the birth certificate. So how could he see the birth certificate if now it's gone? Well, actually, the governor has not said he's seen the birth certificate. It's the former governor's health director who says she in fact has seen the birth certificate. We just interviewed her on camera. Then why don't they show it, Anderson? Well, because they're not allowed to. Only the president... Yes, they are. No. Yes, they are. Only the president can release it. They're not allowed to unless they have the approval. Anderson, they are not allowed to unless they have the approval of the subject. I will give you an example. When this came up, I had to get my birth certificate. OK? So, I called the hospital. I then had the Department of Health call. And they -- it's totally private. They said, I'm sorry, sir. It's totally private. But you can give the approval to make it public. I said, I so give the approval. And within 24 hours and a $38 check, because I have to pay $38 -- it's a fee -- they made it public. And it was all over the place. He can do the same thing. I agree. It's private. And it should be, Anderson. But why should he be held... [Crosstalk] But if Obama wanted to release it, he could do that. Why should he be held, though, to a different standard as any other citizen of Hawaii? He's not held to a different standard. It says you're supposed to show your birth certificate, not a weak paper known as a certificate of live birth. Now, the only bad part is... So, if someone comes to work for you, Mr. Trump, with... The names are so similar, but the meaning is very different, because a birth certificate is a much higher standard. You say it's a higher standard. But it's released by the same people. I don't understand why you would believe another form... Anderson, look, I know you're going to cut a lot of this out, but if you leave this whole conversation... [Crosstalk] No, we're going. We're going with the whole... ... a lot of people -- and I hope you leave the whole conversation without cutting and cutting and cutting... Of course. ... because that would be a great honor to me, because the fact is, a lot of people are troubled with this, just like I am. Yes, but a lot of people believe 9/11 didn't happen, or... [Crosstalk] The governor, previous governor, said that he saw the birth certificate. Now they're saying, oh, it wasn't a birth certificate. It was a certificate of live birth. There was supposed to be a birth certificate. I don't think it exists, Anderson. I hope it exists, but I don't think it exists. [End Clip] As I said, this conversation went on for a long time. We didn't want to edit it, so we're going to have more tomorrow. All right. Well, look, part of the problem with conspiracy theories is that believers cling to them in spite of the facts. Or when the weight of the real evidence gets too heavy, they find something else to object to, they change the topic. Donald Trump is now shifting focus from the President's birth certificate to his academic record, telling the Associated Press -- quote -- How does a bad student go to Columbia and then to Harvard? I'm thinking about it. I'm certainly looking into it. Let him show his records.