Anthony S. Fauci is scheduled to testify in front of the House panel investigating the nation’s coronavirus response. He is the first time the prominent infectious-disease expert will publicly face Congress since leaving government nearly 112 years ago. The GOP-led panel includes some of Fauci’s most persistent critics in Congress, such as Reps. Marjorie Taylor Greene (R-La.) and Ronny Jackson, who have repeatedly alleged that the pandemic began with an accident at