Well, until now. WaPo recently reported that special counsel Robert Mueller is now actively investigating Trump for possible obstruction of justice, specifically regarding Trump's firing of then-FBI director James Comey.
It was unclear whether his tweet about being under investigation was based on direct knowledge or new media reports that suggest Mueller is examining whether the president obstructed justice by firing Comey.
The Justice Department declined to comment on Friday.
President Donald Trump's closest allies are attacking the integrity of those involved in the widening probe of Russian interference in the US election, accusing special counsel Robert Mueller of driving a biased investigation.
President Donald Trump has appeared to acknowledge he is under investigation in the inquiry into alleged Russian meddling in the USA election.
But soon after the abrupt termination, Trump told NBC News that he had been going to fire Comey regardless of any recommendations. Trump aides first said the memo is what sparked the decision to oust the Federal Bureau of Investigation director, but Trump himself promptly undercut that explanation in an interview with NBC News in which he explicitly said Rosenstein's memo had nothing to do it.
Trump's tweets prompted Sen.
President Donald Trump says the economy is improving and job numbers are up, despite the "phony Witch Hunt" against him.
Trump advisers describe the president as increasingly angry over the investigation, yelling at television sets carrying coverage and insisting he is the target of a conspiracy.
Comey told the Senate Select Committee on Intelligence during his testimony last Thursday that the memos he prepared documenting communications with Trump were not classified.
Trump has vehemently denied any collusion between himself or any of his associates and Russian Federation.
In another indication of the seriousness of the probe, Michael Cohen, a personal attorney to Trump, said he has retained attorney Stephen Ryan, a former assistant United States attorney, to represent him in the ongoing probes.
Today's tweets followed Trump's furious Twitter outburst on Friday in which he announced he is under investigation in connection with a probe into alleged Russian election meddling that has dogged the administration and gained steam in recent weeks. An official of Trump's transition confirmed the laywer's internal order sent Thursday.
Trump's surrogates have launched a broad campaign to discredit Mueller, claiming conflicts of interest and that he has been bringing on prosecutors who have supported Barack Obama and Hillary Clinton.
Politico said Friday that the president's rash actions are fueling speculation by insiders in the GOP that he's not in his right mind.
Harvard law professor Noah Feldman argues in a Bloomberg View article that Trump's tweet could force Rosenstein's recusal because of his suggestion that Comey's firing was Rosenstein's idea.