The White House declined to say when President Joe Biden last received a COVID-19 test despite meeting with Canadian Prime Minister Justin Trudeau just days before the foreign leader said he had tested positive for the coronavirus. Trudeau tested positive for the virus four days after meeting Biden during the Summit of the Americas last week. The two leaders embraced during a greeting ceremony at the opening of the Los Angeles summit and held a nearly hourlong bilateral meeting the following day. Biden’s press secretary insisted the president had not been a “close contact,” which the Centers for Disease Control...