US House Speaker Mike Johnson suggested that the presidential cabinet should consider removing President Joe Biden from office by exercising the 25th Amendment, in light of the fallout witnessed after Thursday's debate. 

"There’s a lot of people asking about the 25th Amendment, invoking the 25th Amendment right now because this is an alarming situation," Johnson said in a press conference, noting that the Cabinet, under the Constitution, has jurisdiction to make the decision rather than the House. 

The 25th Amendment of the US Constitution says that the vice president and a majority of the Cabinet can declare that the president is unable to fulfill the responsibilities of the office, thereby transferring the president's duties to the vice president.

US President Joe Biden's performance during a debate against challenger Donald Trump has left some Democrats questioning his viability as the party's nominee, CNN reported, citing Democratic sources.

One source mentioned that it is hard to see how Biden can become the party's nominee and another source characterized him as "incoherent", according to the report on Thursday.

One Democratic operative said, according to CNN, that it was hard for the party to argue that Biden should be their nominee, while another said, "nothing good" came out of Biden's performance in the debate.

David Axelrod, a top advisor to former President Barack Obama, told CNN, "There is a sense of shock at how he came out at the beginning of this debate, how his voice sounded. He seemed a little disoriented. ... There are going to be discussions about whether he should continue."

"Only he can decide if he’s going to continue," he maintained.