Former Labor Secretary Elaine Chao will be Mr. Trump’s Transportation Secretary, a senior transition source confirmed to CBS News’ Major Garrett.

Former Labor Secretary Elaine Chao will be Mr. Trump’s Transportation Secretary, a senior transition source confirmed to CBS News’ Major Garrett.

The appointment is expected to be announced Tuesday afternoon.

Chao, who served as Labor Secretary under President George W. Bush, is the first Asian-American woman to ever hold a Cabinet-level position. She served in the role from 2001 to 2009 -- the only member of Bush’s Cabinet to serve through his entire eight years in the White House.

Before serving as Labor Secretary, Chao ran the United Way of America, was director of the Peace Corps and served as deputy Treasury Secretary under President George H.W. Bush.

Born in Taiwan, Chao moved to the United States when she was eight years old. She is married to Senate Majority Leader Mitch McConnell (R-Kentucky).