Amid the wave of pardons and commutations President Trump has doled out to some of his supporters and surrogates, one former MAGA loyalist in Idaho is fighting to return her pardon. Pamela Hemphill is one of the more than 1,500 people whom Mr. Trump pardoned earlier this year for their roles in the U.S. Capitol Insurrection. She has invoked help from her Republican senator to formally refuse and block the pardon Trump issued her on Jan. 20, his first day back in the White House. Though Hemphill was a defendant of the largest criminal prosecution in American history, she is...