Former House Speaker Kevin McCarthy revealed for the first time that President Biden uses notecards in private meetings with small groups of people, in an interview with FOX Business on Wednesday.

"He still has a teleprompter when you meet behind closed doors," McCarthy told "The Bottom Line" co-hosts. "But the teleprompter are cards. I found when I met with him, it would just be a couple of them. He would read from the card."

McCarthy said that it was difficult to "deviate" with Biden during private negotiations, referencing when he spoke with the president on the debt ceiling. 

COMER ALLEGEDLY UNCOVERS PATTERN IN BIDEN FAMILY BUSINESS PROBE: 'VERY CONCERNING'

"He just sticks to the cards," he said of Biden. "And if you go, if you deviate from the cards, he can't continue onward there."

"Look, he has served the country, regardless whether you like it or not. I respect the man for serving the country. I thank him for that service, but he is not of the age that is best to be able to serving in the presidency, especially the position that he is to going forward with what I have watched to serve again."

McCarthy also said that he has known Biden for a long time and that the president was no longer "the same man" as he was in previous years. 

McCarthy's comments come after media reports that Biden relies heavily on notes, even at private fundraisers with donors. 

FORMER OBAMA FUNDRAISER TELLS DEMS TO 'TURN THE PAGE' ON BIDEN, SAYS LAW WAS 'WEAPONIZED' AGAINST TRUMP

Biden is prone to consulting notecards after calling on pre-selected donors who have questions at the closed-door events, Axios reported on Feb. 23.

"Biden's reliance on notecards to help explain his own policy positions — on questions he knows are coming — is raising concerns among some donors about Biden's age," the article stated.

At 81, Biden is already the oldest president in American history, and the White House reeled earlier this month after a report by Special Counsel Robert Hur about his handling of classified materials referred to the president as a "sympathetic, well-meaning, elderly man with a poor memory" who could not remember the timing of important life events.

GET FOX BUSINESS ON THE GO BY CLICKING HERE

Fox News' David Rutz contributed to this report.