Julian Castro is a former U.S. secretary of housing and urban development who served during the Obama administration from 2014 to 2017. Castro announced that he was running for president of the United States on January 12, 2019. He said he achieved universal preschool in San Antonio during his time as mayor and would do the same nationally. Castro has also promoted Medicare for All and housing affordability. Prior to serving in the Obama administration, Castro was the mayor of San Antonio for five years. He also served on the San Antonio City Council, representing District 7.