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Mr. Obama, meanwhile, delivered a speech, then answered a handful of questions from the audience.

He pledged to boost funding for federal, state and local authorities to go after fraudulent predatory lenders who, he said, try to trick low-income borrowers into home loans they can’t afford. He said 40 percent of all subprime loans are held by Hispanics, and blacks hold more than half of them.

Both Mrs. Clinton and Mr. Obama said a key to better opportunities for Hispanics is early-childhood education.

The two candidates also said they support passing bills such as the Dream Act, which would legalize illegal-alien students and give them a path to citizenship if they stay in school or serve in the military. It would also allow them in-state tuition rates at public colleges and universities.