US President Joe Biden will deliver a speech from the White House on Wednesday to explain why he bowed out of the race with just over three months until election day. It will be Biden’s first address to the nation since his announcement via social media on Sunday that he had ended his bid for a second term and was handing the torch to Vice President Kamala Harris. Biden has kept a low profile since last week, when he came down with a Covid-19 infection and went into isolation at his private residence in the state of Delaware. He called into his campaign headquarters on Monday to urge staffers …