Former Labor Secretary Elaine Chao is set to be announced later Tuesday as President-elect Donald Trump’s choice to head the Department of Transportation, multiple sources familiar with the decision confirmed Tuesday morning.

Chao ran the Labor Department under the George W. Bush administration. She met with the president-elect at Trump Tower last week to discuss labor and transportation policy, according to Trump’s transition team.

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The formal announcement is expected at 1 p.m., one source said.

The wife of Senate Majority Leader Mitch McConnell (R-Ky.), Chao is the first Asian-American woman to hold a Cabinet-level position. She also served as deputy secretary of transportation under President George H.W. Bush. Chao was also a member of Trump’s Asian Pacific American Advisory Council during the campaign.