WATCH: Top WH lawyer met with Mueller team at least 3 times: Reports

WATCH: Top WH lawyer met with Mueller team at least 3 times: Reports

Transcript for Top WH lawyer met with Mueller team at least 3 times: Reports

Begin with president tmp the Mueller inves and one of the key witnesses. Don mcgahn,ours and hours O questions for him. More than any house witnesthe presid unng on twr after the “York Times” first repted that mcgahn has been coopeing for nine months. Ying Mueller getting to a witness this is like trump’s personal attornrudy Giuliani, sayin it was the presidentho gave him permission. And saying truth isn’t truth. What dide an? Here’s Kyra Phillips. Reporter: Don mn, the top Wyer in the trump white house,a key staffer, seen, rarely heard, but today — Was mistake to have you eak without limits to special counsel Mueller? Did you confide because you thought the president would betray you? Reporter: We are now learning mcgahn has become one of special counsel robeueller’s M important insiou. Prosecutors ding more time with him than any other whit houstness. “The new ytimes” reporting hn has met with Mueller’s team at least three for a total of 30 hours. Nows so much about the inner gs of the trump white house. Right there at sny key moments, from the prent’s firing of FBI director James Comey. To trump’s rage at attorney ral Jeff sessions for recusing him the Russ probe. If he was going to recuse himself, should have told prior to takinoffice, and would have, quite simply, cked sody else. Reporter: Mcgahn also knew the president coidered firing rort Mueller. The “Times” Reing mcgahn fearing trump’s team may have setting him up as uy. E president’s personal lawyer, Rudy Giuliani, sayhe’s been assured by the president former legal team that mcgahn supports the president. Than mine, that mcgahn was a strong witnesr the president. Reporter: President trump himself blaste”times'” Y, tweeting it implied, quote,at becausehite houseunsel don mcgahn was giv hours of testimony to th special counsel, he E a John Dean type rat. But I allowed M and all others to testify. I didn’te to.I have nothing to hide Dean is former whi house counl for Richard Nixon who ly flipped on presidenring the watergate investign. Today, Dean tweeting, “Mcgahn isdoing right.”but the presidengal team seems to have been unaware of just how much mcgahn’s been lking, and president hasn’t decided whether to sit with muelhimself. Giuliani saying they’re worried about walking into a perjury trap, raising eyebrows with th comment. And when you tell me that, you know, he should testif because he’s going to tell the truth, and he shouldn’t worry, well, that’s slly because it’s somebods version of the truth. The truth. Idn’t have a conversation — Ttruth. I don’t mean to go like No, it isn’t truth. H T truth. Kyra with us LI present trump weighing in the mue investigation in a interview, saying he has decided to become involved in the investigate N to terfere? Reporter: That’sright. When asked about the investigation, the president Asar as to say, ild run it if want. As forting down with Mueller an answering question he still will not sf he’s going to do that. The president himself now raisinhe question O whether this could be pertrap. D? Thank U.

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

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