FILE - In this May 15, 1973 file photo, then-acting FBI director William Ruckelshaus pauses during a news conference in Washington. Comparisons to the Nixon-era ‚ÄúSaturday night massacre‚Äù were swift after President Donald Trump fired the acting attorney general for refusing to enforce his executive order on immigrants and refugees. In both cases, a dispute between a president and his Justice Department led to an evening maneuver by the president to install an acting attorney general more to his liking. (AP Photo/Charles Gorry)