Transcript for Trump says he has completed his answers for special counsel Robert Mueller

Next tonight to the white house. Where president trump says he has completed his answers for special counsel Robert Mueller and he wrote them himself. Trump also defending acting attorney general Matthew Whitaker saying he has free rein to limit Mueller's investigation. But while the president may think he's finished Anning questions, ah the special counsel has yet to reveal his timeline. Here's ABC white house correspondent Tara Palmeri. Reporter: Tonight president trump making it clear he alone is the one answering special counsel Robert Mueller's questions. Your team is preparing written answers to questions about -- No, no. Not my team. I'm preparing written answers. My -- I -- I'm the one that does the answering. Reporter: Those answers are now finished, and he says will be submitted soon. The president also all but ruling out a sitdown interview. I think we've wasted enough time on this witch hunt and the answer is probably, we're finished. Reporter: When it comes to acting attorney general Matthew Whitaker, the president saying he has free rein to limit the Mueller probe. If Whitaker decides in any way to limit or curtail the Mueller investigation, are you okay with that? Look, he -- it's going to be up to him. I think he's very well aware politically. I think he's astute politically. He's going to do what's right. I really believe he's going to do what's right. Reporter: In the past Whitaker has been critical of the case and laid out how it could be stifled. I could see a scenario where Jeff sessions is replaced with a recess appointment. And that attorney general doesn't fire Bob Mueller, but he just reduces the budget so low that his investigation grinds to almost a halt. Reporter: Today Democrat Adam Schiff claimed Whitaker's temporary appointment should require a senate approval, calling it unconstitutional. The biggest flaw from my point of view is that he was chosen for the purpose of interfering with the Mueller investigation. He auditioned for the part by going on TV and saying he could hobble the investigation. Reporter: Trump claims he was unaware of Whitaker's position and went on Twitter to blast Schiff by changing the spelling of his name to an expletive. Tara joins us from the white house. I want to turn to a different topic. The president also making news for something he said about retired admiral bill Mcraven who commanded the operation that killed Osama bin laden. The president responded to Mcraven's claims that his attacks on the media are the greatest threat to democracy that he has seen in his life. Here's the president. He's a Hillary Clinton backer. And an Obama backer. And, frankly -- He's a Navy S.E.A.L. Wouldn't it have been nice if we got Osama bin laden sooner than that? Wouldn't it have been nice. Living -- think of this. Living in Pakistan. Beautifully in Pakistan. In what I guess they consider a nice mansion. I don't know. I have seen nicer. And Tara, Mcraven firing back tonight? Reporter: He denies he ever backed Clinton or any other candidate in 2016. He is standing by his statement. He says I'm a fan of president Obama and president George W. Bush. Both of whom I worked for. He said he admires presidents who quote uphold the dignity of

This transcript has been automatically generated and may not be 100% accurate.