Filmmaker Michael Moore harshly criticized Democrats for relying on former U.S. Attorney Robert Mueller after testifying before Congress on Wednesday, July 24, during a session on Capitol Hill where he again addressed the issue of alleged Russian interference in the 2016 elections.

Although Democrats expected Mueller to reveal new supporting data during the hearing that would serve as an argument to convict President Trump, the former prosecutor ended up listening rather than talking, CBS reported.

Mueller warned the House Intelligence Committee and the House Judiciary Committee that his testimony would be “limited.”

In his Twitter account, the leftist filmmaker spoke about the hearing and referred to Mueller as “a frail old man, unable to remember things, stumbling, refusing to answer basic questions.”

“I said it in 2017 and Mueller confirmed it today. All of you pundits and moderates and lame Dems who told the public to put their faith in the esteemed Robert Mueller, just STFU from now on,” Moore wrote.

After the hearing, President Trump thanked the Democrats for making Mueller their “star witness,” and shared a message citing the American filmmaker’s criticism of the Democrats’ determinations toward the former prosecutor, “Even Michael Moore agrees that the Dems and Mueller blew it!”

The filmmaker has always been critical of President Trump, so the president wanted to share his message, as he has with other detractors such as the singer Cher, who has published some tweets against the policies of Democrats.

As for Mueller’s statements, Democrat Ted Lieu attempted to inquire during the session as to whether or not the president had been guilty of obstructing justice. “The reason again that you did not indict Donald Trump is because of the OLC opinion stating that you cannot indict a sitting president, correct?” the congressman asked. To which Mueller replied, “That is correct.”

However, on Wednesday afternoon Mueller retracted his earlier statement and said: “I want to go back to one thing that was said this morning by Mr. Lieu who said, and I quote, ‘You didn’t charge the president because of the OLC opinion.’ That is not the correct way to say it,” Mueller said. “As we say in the report, and as I said at the opening, we did not reach a determination as to whether the president committed a crime.

For his part, President Trump also pointed out: “A phony cloud, that’s all it was. They all knew,” he told reporters. “There was no defense to this ridiculous hoax, to this witch-hunt. Everyone knew it was a hoax, especially those Democrats … This was a devastating day for the Democrats.”