In addition, on Monday The New York Times published a non-verbatim list - allegedly derived from the notes of one of those present - of 49 questions that Mueller provided to Trump's lawyers in March and said he wanted to ask the president under oath. One question asks what Trump knew about members of his campaign staff, including former campaign chairman Paul Manafort, reaching out to Moscow.
Two weeks ago, Trump recruited to his legal team former NY mayor Rudy Giuliani, who said he would try to reach a deal with Mueller on how the president would cooperate with the probe. The lawyers have been trying to negotiate ways to narrow the scope of a possible interview, which Mueller requested at the end of previous year.
Cobb and McGahn had different views on how cooperative the White House should be with the special counsel investigation.
In 1998, independent prosecutor Ken Starr served a subpoena on Clinton that ordered him to testify about his relationship with White House intern Monica Lewinsky.
Giuliani and other Trump administration officials said they are negotiating an agreement that would avoid the prospect of a Mueller subpoena.
Additional reporting from Newsy affiliate CNN. He approvingly quoted a legal expert he heard out of #Foxlandia claiming Mueller's questions are "an intrusion" into the president's power to fire anybody at will.
The Times said it obtained the list from someone outside Trump's legal team.More news: English Premier League: Spurs win easily over Watford
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"So disgraceful that the questions concerning the Russian Witch Hunt were "leaked" to the media".
Dowd's comments come more than a month after he resigned from the legal team, and they provide a new window into the nature of the Trump legal team's interactions with the special counsel, who the president has increasingly tried to undermine through public attacks.
Trump hinted Wednesday on Twitter he might invoke executive privilege and challenge Mueller should he be subpoenaed before a federal grand jury. Trump initially said he was eager for an interview, but he hasn't said so recently.
While the Supreme Court has never definitively ruled on the subject, the answer appears to be yes.
The questions also involve key moments from the early months of the Trump administration, including his reaction to Attorney General Jeff Sessions' recusal from the Russian Federation investigation and Trump's firing of his national security adviser, Michael Flynn.
Mueller issued the warning during a meeting with Trump's attorneys on March 5, as four people with knowledge of the meeting revealed to the capital daily on condition of anonymity. Manafort is now facing a litany of charges under Mueller's investigation. Trump denies making such requests. Without saying a word publicly, Mr. Mueller and his team of experienced investigators are showing America how a government premised on the rule of law is supposed to function.
One question asks whether there were any efforts to reach out to Flynn "about seeking immunity or possible pardon" ahead of his guilty plea past year.