What distinguishes Julián Castro from the rest of the Democratic candidates?

 04/12/2019 - 09:41
SAN ANTONIO, TX - JANUARY 12: Julian Castro, former U.S. Department of Housing and Urban Development (HUD) Secretary and San Antonio Mayor, announces his candidacy for president in 2020 at Plaza Guadalupe on January 12, 2019, in San Antonio, Texas. If successful, Castro would be the first Hispanic candidate to win the White House. (Photo by Edward A. Ornelas/Getty Images)

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