The charge stemmed from when Cohen spoke with House and Senate panels about his contacts with Russians during the 2016 presidential campaign.

Cohen admitted to being untruthful with Congress while discussing plans to build a Trump Tower in Moscow. Cohen had said that negotiations to build the property in Russia concluded in January 2016.

But emails showed that he talked with a Russian developer until the summer of 2016. Court documents show that he also lied to lawmakers about his plans to travel to Russia and about how long the plans were talked about inside the Trump Organization.

Trump blasted Cohen as a "weak person" and accused him of lying in order to get a reduced sentence while talking to reporters on Thursday.

The move from Cohen to plead guilty comes two weeks before he is scheduled to be sentenced for guilty pleas he made earlier this year in a case in the Southern District of New York.

Trump has repeatedly railed against Mueller's probe, often referring to it as a "disgrace" and a "witch hunt."

"When will this illegal Joseph McCarthy style Witch Hunt, one that has shattered so many innocent lives, ever end-or will it just go on forever?" he tweeted early Thursday. "After wasting more than $40,000,000 (is that possible?), it has proven only one thing-there was NO Collusion with Russia. So Ridiculous!"

Nadler said Mueller has now secured guilty pleas from people such as Trump's former lawyer and former campaign chairman.