US President Donald Trump tweeted that he had “the legal right” to interfere in criminal cases after his attorney-general argued that tweets from the White House made his work “impossible.”
Last Thursday, America’s top senator William Barr told Mr. Trump to stop his tweets, claiming he wouldn’t be insulted.
Mr. Barr spoke out after Mr. Trump revived his attack last his former adviser Roger Stone’s criminal trial.
Prosecutors had recommended that Stone serve a stiff sentence but that was unfair tweeted by Mr. Trump.
Mr. Trump ignored the appeal by the attorney general to stop tweeting on Friday morning.
Whether the US President has the authority to order the Attorney General to open or close a case is legally unclear.
Since the Watergate scandal of the 1970s, the Justice Department has been designed to operate without political interference.
Previously, Mr. Trump had called for inquiries into perceived enemies such as former FBI Director James Comey and former FBI Deputy Director Andrew McCabe.
Mr. McCabe’s attorneys announced on Friday that the justice department had ended its criminal investigation into whether their client had been lying to investigators about media leaks.
Meanwhile, the New York Times announced that Mr. Barr had named outside lawyers to review the case against Michael Flynn, another Trump ally.
Flynn, who was the first national security adviser to Mr. Trump, initially pleaded guilty to lying to prosecutors in a federal investigation, but subsequently withheld co-operation and is in the midst of trying to recant his plea.
Mr. Barr said on Thursday that Mr. Trump “undermines” him by tweeting, making my job “impossible”
“I think it is time to end the tweeting on criminal cases at the Department of Justice,” Mr. Barr said to ABC News.
“I can not do my job here at the department with a constant attack on the history that undermines me,” he said.