Attorney General William Barr holds a news conference on Monday.

US Attorney General William Barr (C) speaks during a news conference to provide an update on the investigation of the terrorist bombing of Pan Am flight 103 on the 32nd anniversary of the attack, at the US Department of Justice in Washington, DC, on December 21, 2020. – The US Justice Department unveiled charges against the Libyan who allegedly built the bomb that exploded aboard Pan Am flight 103 over Scotland exactly 32 years ago. Attorney General Bill Barr said a former Libyan intelligence operative, “Abu Agela Mas’ud Kheir Al-Marimi,” helped build the explosive device that blew up the aircraft — killing 259 people, including 190 Americans, aboard the US-bound flight and 11 people on the ground. (Photo by MICHAEL REYNOLDS / POOL / AFP) (Photo by MICHAEL REYNOLDS/POOL/AFP via Getty Images)