Washington — Since Russia launched its full-scale invasion of Ukraine in February 2022, the U.S. Congress has appropriated $174 billion, including U.S. weapons and materiel, to respond to the crisis and help Ukraine defend itself against Russia’s aggression. U.S. Department of Defense Inspector General Robert Storch calls the oversight of U.S. security assistance to Ukraine his office’s “job one,” with more than 200 people assigned to …