Millions of Americans are ignoring the advice of public health experts and traveling for the Thanksgiving holiday.

The Transportation Security Administration reported that more than 1.04 million people went through airport security checkpoints Sunday, the most since mid-March, and about 1 million more went through TSA checkpoints each day on Friday and Saturday.

When Joe Biden thanked Black voters in his first remarks as president-elect, he credited them with lifting his campaign from its lowest point during the Democratic primaries.

"You've always had my back, and I'll have yours," he promised.

While Biden won Black voters overwhelmingly across the country, they were key to his victories in Michigan, Wisconsin, Pennsylvania and Georgia — places where President Trump and his allies have been targeting ballots in cities with large Black populations in an attempt to overturn the president's defeat and retain power.

Updated on Tuesday at 12:25 p.m. ET

Joe Biden's administration can formally begin its transition to power after a previously little-known federal agency on Monday ascertained Biden as the apparent winner of the election more than two weeks after the Democrat became president-elect.

The awaited decision from the General Services Administration provides the incoming Biden team with federal resources and access to agencies.