President Trump lashed out at special counsel Robert Mueller and his own former personal lawyer Michael Cohen on Twitter Monday. Trump responded to Cohen’s lawyers’ request for prison “time served” by tweeting that Cohen deserves “a full and complete sentence.” Last week, Cohen pleaded guilty to lying to Congress to help cover for Trump. Trump also praised his longtime adviser Roger Stone for having the “guts” for agreeing not to testify against him. Some experts, including George Conway, litigator and husband of White House counselor Kellyanne Conway, have said the tweet amounts to witness tampering, which is considered an obstruction of justice.

Special counsel Mueller is expected to file a sentencing memo today for Michael Flynn and sentencing memos for Michael Cohen and Paul Manafort in the coming days.