When Cohen pleaded guilty to campaign finance violations over the summer, he also claimed he went about those actions at the urging of Mr. Trump.
George Conway, the husband of White House counselor Kellyanne Conway, appeared Monday to accuse Donald Trump of witness tampering and obstruction of justice after the president praised Roger Stone for refusing to testify against him. Trump added that Cohen "makes up stories to get a GREAT & ALREADY reduced deal for himself".
Mr Trump made his views clear in a tweet on Monday.
U.S. President Donald Trump called for a "a long prison term" after his ex-lawyer Michael Cohen admitted lying to Congress about pursuing a real estate deal with Russian Federation on Trump's behalf during the 2016 election campaign.
Cohen asked a federal judge to opt against giving him jail time in a document filed Friday night.
"He lied for this outcome and should, in my opinion, serve a full and complete sentence", Trump concluded.
Trump's comments about Cohen contrasted with his expressions of sympathy for former associates caught in the web of Mueller's investigation, including former 2016 campaign chairman Paul Manafort, who faces sentencing after being convicted of tax and bank fraud charges.
The tweet about Stone drew immediate criticism from several lawyers, who said it amounted to witness tampering.
Mr. Trump insists that the crimes Cohen had pleaded guilty to have nothing to do with him.
"Dr. Corsi has been threatened with immediate indictment by Mueller's prosecutorial staff unless he testifies falsely against Roger Stone and/or President Donald Trump and his presidential campaign, among other false testimony", Corsi's lawyers, Larry Klayman and David Gray, said in a complaint submitted to acting attorney general Matthew Whitaker. The Justice Department is likely to assess that whatever it is, the tweet is not a legal determination by the president and is not binding on the agency.
"Nice to know that some people still have 'guts!'" Trump wrote.
File under "18 U.S.C. §§ 1503, 1512", wrote George Conway after retweeting the president's post, listing the number of the federal criminal statute about "tampering with a witness, victim, or an informant". "The truth is very bad for their mission!"