San Antonio mayor to be vetted for Obama Cabinet post

San Antonio's Democratic mayor, Julian Castro, will be vetted for a post in President Obama's Cabinet, CBS News has confirmed.

White House aides tell CBS News that Castro is in line to replace HUD Secretary Shaun Donovan, who has held his post since the beginning of the president's first term.

According to The New York Times, Donovan, in turn, would serve as the next head of the Office of Management and Budget. The current OMB chief, Sylvia Mathews Burwell, was nominated by Mr. Obama to be the next secretary of health and human services.

Burwell testified before the Senate Finance Committee Wednesday, and that panel is expected to vote soon on her nomination. A final confirmation vote in the Senate could come later this month. She is likely to be confirmed.

Castro, who burst onto the national political scene in 2012 with a well-received keynote address at that year's Democratic National Convention in Charlotte, N.C., is considered a rising star in the Democratic Party. He's commonly mentioned among potential vice-presidential picks for the party in the 2016 election. His brother, Joaquin Castro, is a Democratic congressman from Texas.

Castro was offered a spot in the president's Cabinet last year as transportation secretary, but the mayor declined because he was preparing to seek a third two-year term at city hall.