ChainCatcher news: According to Jinshi, Tucker Carlson, a well-known American conservative political journalist, author and current affairs commentator, said that despite expressing support for Biden in public, Obama is privately lobbying to replace Biden, and he told insiders that Biden cannot defeat Trump. Carlson called this the situation described by an "exceptionally reliable source."

Biden's utter humiliation in last Friday's debate has sent top Democrats into a state of panic and prompted The New York Times to insist he should drop out of the race. Despite the backlash, Obama has backed Biden on social media, claiming that "bad debate nights happen" and that people should continue to support him.

Carlson said on the social platform: "I have learned from an unusually reliable source that Obama's tweet supporting Biden is not sincere. Privately, Obama is telling people that Biden cannot win, so he supports opening the nominating convention." He added: "Obama did not reveal who he supports, and at least as of yesterday afternoon, he had not met with Biden in person to convey this message."