american web dev school that for foreigners

There is a intensive 2 month school in San Francisco called App Academy that teaches Rails. They dont charge money till after you get a job and only take a small 12% of your income. So it is a perfect opportunity for training americans to get in the IT industry so that we dont keep outsourcing jobs. But if you look at the alumni of this schools first graduated class they are mostly foreign workers on work visa who have a CS degree and years of work experience and are getting retrained to do Rails programming:
http://www.appacademy.io/alumni
 Obama makes a big thing about how he is going to bring jobs back by re-training american workers, so why is this school training outsourced workers?