San Antonio, Texas Mayor Julian Castro talks to reporters at the Democratic National Convention in Charlotte, N.C., Tuesday, Sept. 4, 2012. The mayor will give the keynote speech at the

 

              San Antonio, Texas Mayor Julian Castro talks to reporters at the Democratic National Convention in Charlotte, N.C., Tuesday, Sept. 4, 2012. The mayor will give the keynote speech at the
San Antonio, Texas Mayor Julian Castro talks to reporters at the Democratic National Convention in Charlotte, N.C., Tuesday, Sept. 4, 2012. The mayor will give the keynote speech at the DNC. (AP Photo/Jae C. Hong)