New video appears to show ABC News Anchor — and recently, President Joe Biden interview — George Stephanopoulos casting doubts about the president’s ability to complete a second term. A video published by TMZ on Tuesday night showed a man walk up to Stephanopoulos on the street and ask: “What do you think, do you think Biden should step down? You’ve talked to him more than anybody else has lately. And you can be honest.” Stephanopoulos, donning green shorts, headphones and a pair of gym shoes, appears to respond, although the audio is grainy: “I don’t think he can serve four more years.” Want …