WASHINGTON (NEXSTAR) – President Joe Biden and former president Donald Trump hit the campaign trail Friday, the day after their historic 90-minute matchup.

President Biden addressed his performance head on, stressing he wouldn’t continue to run for re-election if he’s not up to the job.

“I know I’m not a young man, to state the obvious,” said Biden.

President Biden himself seemed unhappy with his performance.

“I don’t debate as well as I used to, but I know what I do know. I know how to tell the truth!” he said.

Some of the president’s biggest supporters in Congress, like South Carolina Congressman Jim Clyburn, are standing by him.

“Stay the course. Chill out,” said Clyburn.

Mississippi Congressman Bennie Thompson says one debate should not upend President Biden’s entire campaign.

“President Biden will make his case to the American people, and he’ll be re-elected,” Thompson said.

Some of former president Donald Trump’s biggest supporters in Congress, like Georgia Congresswoman Marjorie Taylor Greene, say President Biden’s performance all but guarantees another Trump White House.

“Congratulations to President Trump. Job well done. It was absolutely what we wanted to see,” said Greene.

House Speaker Mike Johnson took it a step further saying Democrats should seriously consider invoking the 25th Amendment. It would remove President Biden from office and give Vice President Kamala Harris the duties of acting president.

 “We have a serious problem here because we have a president who by all appearances is not up to the task. And these are very dangerous times,” said Johnson.

The vice president and a majority of the president’s cabinet would have to vote to invoke the 25th Amendment, which has never happened.