Attorney General Barr Defends His Actions, COVID-19 Vaccine Tests, Military Extremism : Up First Attorney General William Barr says he is responsible for a series of actions that appear to benefit President Trump. But he insists there's no political influence in those decisions from the White House. The race to find a vaccine for COVID-19 has yielded 16 promising candidates. With cases soaring across the United States, are any of those new drugs viable? And a soldier in Kentucky faces federal terrorism-related charges. Prosecutors say Ethan Melzer was part of a satanic white supremacist network and planned to attack his own unit.