During a Q&A in San Antonio, Texas, with the president of the U.S. Hispanic Chamber of Commerce, Javier Palomarez, Clinton was asked her thoughts on the young, Hispanic U.S. Housing and Urban Development secretary as her possible running mate.
"I think really highly of him, and I am thrilled to have his endorsement today. Both he and his twin brother are just among the best young leaders in America, regardless of category or the fact that they come from San Antonio,” Clinton said, referring to Castro, 41, and his brother, Rep. Joaquín Castro. "I am going to really look hard at him for anything because that’s how good he is, and he deserves the accolades he’s receiving.”
Clinton and Julian Castro, 41, are hosting a "Latinos for Hillary" rally together in San Antonio later today. Castro endorsed Clinton for president last week.
Despite their public friendship, Castro himself continues to play coy when asked about his VP prospects.
"Oh, I doubt that's going to happen," he said in an interview on MSNBC earlier today, reiterating his go-to line on the topic.
He told ABC News point blank last year: "I don't believe that I am going to be vice president."