Julián Castro threatens to drop out if he doesn't raise $800,000 by end of month

Democratic Presidential Candidate Julián Castro speaks at a presidential candidate forum in Houston on Aug. 31, 2019. The forum is part of the annual Islamic Society of North America convention.Michael Stravato for The Texas TribuneDemocratic presidential candidate Julián Castro is threatening to end his campaign if he does not raise $800,000 by the end of the month, saying he is in "dire need of financial resources to keep going."Castro, the former U.S. housing secretary and San