fox's own shannon breem is standing by with the details tonight. >> sean, the administration is pushing back against claims that it has lost track of thousands of foreign nationals who came here on student visas and simply disappeared. over the last decade the number of f-1 granted on a yearly basis has more than doubled to nearly 535,000 last year. foreig

fox's own shannon breem is standing by with the details tonight. shannon. >> sean, the administration is pushing back against claims that it has lost track of thousands of foreign nationals who came here on student visas and simply disappeared. over the last decade the number of f-1 granted on a yearly basis has more than doubled to nearly 535,000 last year. foreign students are admitted to the u.s. not only to go to topnotch ivy league schools but also to trade schools teaching everything from manicures to animal grooming. and the way the system is set up schools have to keep track of the student visa holders and let the government know if they're not showing up to class. it's doubtful even if the schools did a good job of that that the government would even follow-up. >> if you come to the united states on a visa lawfully and do not return, nobody knows you did not return first and foremost, and if you are apprehended, say speeding, dui some time down the road, you will not be deported. only if you're convicted of a serious felony. >> reporter: as