ABC anchor caught on video saying Biden cannot serve four more years

George Stephanopoulos, who interviewed president days ago, says he should not have answered passerby's question

The ABC News anchor George Stephanopoulos was captured on camera saying he did not think Joe Biden could serve another four years in office, four days after a major TV interview with the US president and amid a re-election campaign in crisis.

The comment came after Biden attempted to assuage concerns among Democrats about his age and mental acuity, including in the recent interview with Stephanopoulos, previously a prominent political operative.