Mark Krikorian, the executive director of the Center for Immigration Studies, said migrants who are crossing illegally into the U.S. are not being thoroughly screened for illnesses or criminal backgrounds.

“They often screen them before they go to detention, but they’re not being detained,” Krikorian explained on Thursday’s episode of The Tennessee Star Report with Michael Patrick Leahy. “As far as criminal behavior, they do run their names through some databases before they let them go, but that only works if we have records of them having committed crimes in the United States. The problem always with vetting is garbage in, garbage out. Do you think that the Somalia DMV or the medical records office or whatever in Venezuela is going to tell us anything about people? Of course not. So, yes, there is some kind of pro forma screening but it doesn’t really screen very much.”