President-elect Joe Biden

Alabama Sen. Tommy Tuberville is blocking the quick promotion of an aide to Defense Secretary Lloyd Austin. Tuberville is blocking the nomination of Lt. Gen. Ron Clark over concerns that he and other senior staff did not quickly notify President Joe Biden when Austin was hospitalized with complications from cancer treatment earlier this year.

Joe Biden and Kamala Harris are being sworn in as the president and vice president of the United States. Watch the ceremony, inaugural address and other…