Senate Majority Leader Mitch McConnell of Ky., walks past reporters on Capitol Hill in Washington, Tuesday, Dec. 15, 2020. (AP Photo/Susan Walsh)

Senate Minority Leader Sen. Chuck Schumer of N.Y., walks on Capitol Hill in Washington, Tuesday, Dec. 15, 2020. (AP Photo/Susan Walsh)

Speaker of the House Nancy Pelosi, D-Calif., signs a form next to Dr. Brian Monahan, attending physician Congress of the United States after she received a Pfizer-BioNTech COVID-19 vaccine shot in Washington, Friday, Dec. 18, 2020. (Anna Moneymaker/The New York Times via AP, Pool)

Senate Majority Leader Mitch McConnell of Ky., speaks during a news conference with other Senate Republicans on Capitol Hill in Washington, Tuesday, Dec. 15, 2020. (Rod Lamkey/Pool via AP)

Senate Majority Leader Mitch McConnell of Ky., removes his face mask as he arrives with Sen. John Barrasso, R-Wyo., left, and John Thune, R-S.D., right, for a news conference with other Senate Republicans on Capitol Hill in Washington, Tuesday, Dec. 15, 2020. (Rod Lamkey/Pool via AP)