WASHINGTON — DC US Attorney Matthew Graves announced Monday that he will resign before President-elect Donald Trump retakes the White House — likely avoiding an involuntary departure after controversial decisions not to criminally charge first son Hunter Biden and most local crimes. “Serving as the U.S. Attorney for the District of Columbia has been the honor of a lifetime,” Graves said in a statement announcing his resignation, effective Jan. 16. “I am deeply thankful to [DC Delegate Eleanor] Holmes Norton for recommending me; to President Biden for nominating me; and to Attorney General [Merrick] Garland for placing his trust in...