US President Donald Trump’s defence team in his Senate trial will include special prosecutors from President Bill Clinton’s impeachment.
He will be represented by Ken Starr and Robert Ray, who investigated Mr. Clinton, and Alan Dershowitz, whose past clients include OJ Simpson.
White House counsel Pat Cipollone and Mr. Trump’s personal lawyer Jay Sekulow will lead the team.
Opening statements in the Trump impeachment trial will begin next week.
Mr. Starr was the US Department of Justice independent counsel who investigated the Whitewater affair, a scandal-plagued mid-1980s land venture in Arkansas involving Bill and Hillary Clinton.
The inquiry ultimately uncovered unrelated evidence that Mr. Clinton had been having an affair with a White House intern, Monica Lewinsky.
The investigation culminated in the Democratic president’s impeachment by the US House of Representatives in 1998. Mr. Clinton was acquitted by the Senate.
Mr Ray succeeded Mr Starr as the independent counsel.
Ms. Lewinsky tweeted on Friday shortly after Mr. Trump’s team was announced: “This is definitely an ‘are you kidding me?’ kinda day”, though she inserted an expletive.
In 2016, Mr. Starr was forced out of his position as president of Baylor University after an inquiry found the school had mishandled rape accusations against its football players.
He later also resigned from his roles as chancellor and law professor at the university.
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Mr. Dershowitz is a retired Harvard University law professor and constitutional law expert whose past celebrity clients have also included boxer Mike Tyson.
He told CBS News, the BBC’s US partner, that he had spoken to the president on Wednesday about the impeachment case.
“I agreed to do it as an independent constitutional scholar,” Mr. Dershowitz said. “I take no position on the politics – just on the constitution.”
He added he was “very, very concerned” about the precedent this impeachment could establish.
“It could weaken the presidency and weaponise impeachment as a partisan tactic,” he said.
Mr. Dershowitz said in a statement that he had also opposed Mr. Clinton’s impeachment, and voted for Hillary Clinton in the 2016 election.
The president sought Mr. Dershowitz’s advice, too, during the 2017-19 special counsel investigation into alleged Russian meddling in the US presidential election.
Mr. Dershowitz and Mr. Starr both represented disgraced financier Jeffrey Epstein during his 2008 abuse trial.
Axios reported that some White House officials were against Mr Dershowitz joining the team, given his ties to Mr. Epstein.
