FILE - In this Jan. 11, 2017, file photo, Environmental Protection Agency (EPA) Administrator Gina McCarthy, speaks during a news conference at the Justice Department in Washington. President-elect Joe Biden is set to pick McCarthy as domestic climate czar. (AP Photo/Manuel Balce Ceneta, File)

FILE - In this July 28, 2016, file photo, former Michigan Gov. Jennifer Granholm speaks during the final day of the Democratic National Convention in Philadelphia. Biden is expected to pick his former rival Pete Buttigieg as secretary of transportation and Granholm as energy secretary. (AP Photo/J. Scott Applewhite, File)

FILE - In this April 29, 2019 file photo, then Democratic presidential candidate Mayor Pete Buttigieg, from South Bend, Indiana, listens during a lunch meeting with civil rights leader Rev. Al Sharpton at Sylvia's Restaurant in Harlem neighborhood of New York. President-elect Joe Biden is expected to pick former South Bend, Indiana, mayor Pete Buttigieg to head the transportation department. (AP Photo/Bebeto Matthews, Pool)

Matt Vereline, left, and other members of "Long Island Loud Majority" at a pre-election Trump rally in Lititz, Pa., on Oct. 26, 2020. Vereline, a member of the pro-Trump group “Long Island Loud Majority” is not in the mood of reconciliation. Vereline, who live Bohemia, N.Y., is convinced “there was a lot more voter fraud than we know about,” though he's not sure whether it changed the outcome. But that won't keep him from rallying around what he thinks was an injustice. After all, that's what Democrats did to Trump, he says. (AP Photo/Jill Colvin)

President-elect Joe Biden waves to supporters after speaking at a drive-in rally for Georgia Democratic candidates for U.S. Senate Raphael Warnock and Jon Ossoff, Tuesday, Dec. 15, 2020, in Atlanta. (AP Photo/Patrick Semansky)