San Antonio failed to properly spend funds approved by Congress to combat the housing crisis while President Barack Obama’s expected nominee to run the Housing and Urban Development Department was mayor of the city, according to a 2012 report from the agency’s inspector general.The report could be a blemish on the record of San Antonio Mayor Julián Castro, a rising star in the Democratic party whose consideration for a spot in the cabinet is seen as a way to burnish his national political profile.