WASHINGTON (REUTERS) - US President Donald Trump on Friday (Feb 14) said he has "the legal right" to interfere in criminal cases, capping a tumultuous week that raised questions about whether he is eroding the independence of the US legal system.
Trump's criticism of the judge, jury and prosecutors in the criminal case of his longtime adviser Roger Stone prompted an unusual rebuke from Attorney-General William Barr, his top law enforcement official and has spurred new demands for investigation from the Democrats who unsuccessfully tried to remove the Republican president from office.
It is the latest in a string of aggressive actions by Trump since the Republican-controlled Senate acquitted him of impeachment charges last week.
Trump has transferred or fired government officials who testified about his efforts to pressure Ukraine to investigate a potential political rival in November's presidential election.
He also dropped his nomination of former US Attorney Jessie Liu, who oversaw the Stone case, for another government post in the Treasury Department.
Sources close to the president said Trump has a greater sense of freedom in the wake of his Senate acquittal.
"You have to remember, he's not 'of' government. He gets frustrated when people tell him something can't get done. He's like: 'Just get it done'," said one administration official who spoke on condition of anonymity.
Barr on Thursday said Trump's posts on Twitter made it "impossible" for him to do his job leading the Justice Department, telling ABC News in an interview: "It's time to stop the tweeting."
Trump "has never asked me to do anything in a criminal case," Barr added.
The president responded on Friday morning. "This doesn't mean that I do not have, as President, the legal right to do so, I do, but I have so far chosen not to!" he wrote on Twitter.
The White House earlier said Trump was not bothered by Barr's remarks and that the president remained confident in the attorney-general.
But Trump's insistence that he has the right to interfere in criminal cases runs counter to the practice of previous US presidents, who have generally kept an arms-length distance from the Justice Department since the Watergate scandal of the 1970s.
Despite Barr's high-profile rebuke, the attorney-general has been an outspoken defender of the president and has aggressively sought to implement his agenda, frequently drawing charges from Democrats and former Justice Department officials that he is politicizing the rule of law.
The Justice Department on Tuesday asked for a lighter sentence for Stone, scaling back prosecutors' initial request that he serve seven to nine years after being found guilty of lying to Congress, obstruction and witness tampering.
That prompted all four prosecutors to resign from the case in apparent protest.
Barr has also ordered an investigation into the Obama administration's activities in 2016 as it examined possible ties between Moscow and the Trump campaign, and has gone after states and cities that have defied his hard-line immigration policies.
Barr's Justice Department sought to quash the whistleblower complaint about Trump's effort to pressure Ukraine to investigate former Democratic vice-president Joe Biden, which led to the president's impeachment.
He confirmed earlier this week that the department is taking evidence from Trump's personal lawyer, Rudy Giuliani, who has been seeking information in Ukraine about Biden.
Democrats who control the House of Representatives, called for Barr to testify next month over the matter and asked the department's watchdog to investigate but have little other recourse.
'WRONG THING TO DO'
Trump also had strong words for his former chief of staff, John Kelly, who criticized Trump earlier this week.
"When I terminated John Kelly, which I couldn't do fast enough, he knew full well that he was way over his head ...He came in with a bang, went out with a whimper," Trump tweeted, adding that Kelly "misses the action & just can't keep his mouth shut."
Kelly had defended Lieutenant-Colonel Alexander Vindman, a decorated war veteran, who was ousted from his White House job last week after testifying in Trump's impeachment inquiry. Kelly also criticised Trump for interfering in another recent case involving former Navy Seal Eddie Gallagher, who was convicted of war crimes.
"The idea that the commander in chief intervened there, in my opinion, was exactly the wrong thing to do," Kelly said in a speech, according to the Atlantic magazine.
Like Barr, Trump's Republican allies in Congress have said they wish he would be less outspoken on Twitter, even as they have consistently defended his actions.
The Senate on Thursday sought to impose some restrictions on Trump, voting to limit his ability to wage war with Iran and questioning whether one of his nominees is qualified to serve on the board of the Federal Reserve.
Meanwhile, the president has moved to rebuild his staff with those he sees as loyalists, including former communication director Hope Hicks, who worked closely with Trump in his business before serving as his 2016 campaign press secretary.
He also rehired his former personal assistant Johnny McEntee to lead his personnel office, who sources say will be tasked with ensuring that new hires are loyal to the president.