Trump has asked his advisers about his power to pardon aides, family members and even himself in connection with the probe, according to one of those people.
…Other advisers said the president is also irritated by the notion that Mueller’s probe could reach into his and his family’s finances.
Trump has been fuming about the probe in recent weeks as he has been informed about the legal questions that he and his family could face. His primary frustration centers on why allegations that his campaign coordinated with Russia should spread into scrutinizing many years of Trump dealmaking. He has told aides he was especially disturbed after learning Mueller would be able to access several years of his tax returns.
…The president has long called the FBI investigation into his campaign’s possible coordination with the Russians a “witch hunt.” But now, Trump is coming face-to-face with a powerful investigative team that is able to study evidence of any crime it encounters in the probe — including tax fraud, lying to federal agents and interference in the investigation.
“This is Ken Starr times 1,000,” said one lawyer involved in the case, referring to the independent counsel who oversaw an investigation that eventually led to House impeachment proceedings against President Bill Clinton. “Of course, it’s going to go into his finances.”
…Mueller’s probe has already expanded to include an examination of whether Trump obstructed justice in his dealings with Comey, as well as the business activities of Jared Kushner, Trump’s son-in-law.
…Law enforcement officials described Sessions as increasingly distant from the White House and the FBI because of the strains of the Russia investigation.
Traditionally, Justice Department leaders have sought to maintain a certain degree of autonomy from the White House as a means of ensuring prosecutorial independence.
But Sessions’s situation is more unusual, law enforcement officials said, because he has angered the president for apparently being too independent while also angering many at the FBI for his role in the president’s firing of Comey.
As a result, there is far less communication among those three key parts of the government than in years past, several officials said.
…Some note that the Constitution does not explicitly prohibit a president from pardoning himself. On the other side, experts say that by definition a pardon is something you can only give to someone else. There is also a common-law canon that prohibits individuals from serving as a judge in their own case. “For example, we would not allow a judge to preside over his or her own trial,” Kalt said.