U.S. Transportation Secretary Pete Buttigieg speaks during his appearance at the Texas Tribune Festival last year.

Credit: Screen Capture: YouTube / The Texas Tribune Former U.S. Secretary of Transportation Pete Buttigieg is coming to San Antonio this Sunday to support a pair of South Texas Democrats running for Congress.

Buttigieg will speak at a rally for former Bexar County Sheriff's Deputy Johnny Garcia, who's running to represent Texas' 35th District, and former public school teacher Katy Padilla Stout, who's challenging Republican Brandon Herrera in the 23rd District.