Erika Rich/BDP

San Antonio Mayor Julian Castro will go before a Senate confirmation committee Tuesday, the first step in the process of becoming the new leader of the U.S. Department of Housing and Urban Development.

In May, President Barack Obama nominated the three-term San Antonio mayor for the job, replacing Shaun Donovan.

If confirmed, Castro said while he'll be focused on housing in his new role, he's always been a strong supporter of education and hopes that's how he'll be remembered.

A White House official said Thursday that President Obama will tap San Antonio Mayor Julian Castro to become housing secretary and Shaun Donovan, his current housing chief, to run the budget office.

A formal announcement is scheduled to be made on Friday afternoon.

The White House isn't talking and neither is Mayor Julián Castro.

Today he helped hand out awards inside city council chambers to businesses for the 2014 Healthy Workplace Recognition Program.

Afterward, a swarm of media caught up with him, only to hear the three-term mayor say what he's said before.

"All I'm going to say today is that I enjoy being mayor, and I'm going to continue to work hard on behalf of the people that elected me," Castro said. "I'll talk about the future and other things later."