'What an Idiot': Hot Mic Catches Fauci Criticizing GOP Lawmaker During Heated Congressional Hearing

On Tuesday, Dr. Anthony Fauci engaged in a contentious exchange with GOP Sen. Roger Marshall, who pressed the leading US expert on infectious disease about the former's hefty six-figure salary, research, and the multibillion-dollar budget he manages as director of the National Institute of Allergy and Infectious Diseases.