A couple weeks ago, Vice President Joe Biden told the Hispanic advocacy group La Raza, “Mitt Romney wants you to show your papers, but he won’t show us his.”

That sentiment — that Romney is hiding his tax information while demanding immigrants prove their status — has made its way into a Spanish-language ad “No Trust” from the Obama-backing super PAC Priorities USA Action and the Service Employees International Union.

“Our vote is based on trust but Mitt Romney’s not telling us everything,” the narrator says. “What is he hiding? He wants us to show him our papers. But he doesn’t show us his. How can we trust Mitt Romney?”

Priorities’s Spanish-language ads have not gotten as much attention as the group’s Rust Belt attacks on Romney’s business record. But these ads are no less harsh — one recent Spanish spot called Romney “a person without feelings.” Obama and his allies are spending far more on Spanish-language ads than Romney is.

“No Trust” will run in Colorado, Nevada and Florida.