House Speaker Nancy Pelosi of Calif., second from left, wears a face mask to protect against the spread of the new coronavirus as she conducts a ceremonial swearing-in for Rep. Tom Tiffany, R-Wis., third from right, joined by his wife Chris, center, and daughters Lexie, from left, Karlyn and Katherine on Capitol Hill in Washington, Tuesday, May 19, 2020. (AP Photo/Patrick Semansky)