WASHINGTON — Five years after he and his allies tried and failed to overturn the results of the 2020 election, President Donald Trump is using his time back in the White House to take a series of actions aimed at erasing or rewriting the Jan. 6, 2021, siege on the U.S. Capitol, with more likely to come. Trump mass pardoned Jan. 6 rioters on his first day back in office. Justice Department officials and FBI agents involved in the massive investigation and prosecution were fired. Dozens of other supporters involved in efforts to overturn the election results have been pre-emptively...