 And President Joe Biden has a fresh opportunity today to try to prove to the American public he's capable of serving another four years after a shocking debate flop through the future of his presidency into doubt. Biden hit new trouble Wednesday as House Speaker Emerita Nancy Pelosi said merely it's up to the president to decide if he should stay in the race. Celebrity donor George Clooney said he shouldn't run. And Democratic senators and lawmakers expressed fresh fear about his ability to beat Republican Donald Trump.