By Patricia Zengerle and Moira Warburton WASHINGTON (Reuters) -The U.S. House of Representatives committee probing the Jan. 6, 2021, attack on the U.S. Capitol by Donald Trump’s supporters voted unanimously on Thursday to subpoena the former president, a move that could lead to criminal charges if he does not comply. The House select committee’s seven Democratic and two Republican members voted 9-0 in favor of issuing a subpoena for Trump to provide documents and testimony under oath in connection with the storming of the Capitol. “He must be accountable. He is required to answer for his actio…