The U.S. already does this. Providing evidence of financial support is a big part of visa and green card applications. If this is a big problem, it's because th

The U.S. already does this. Providing evidence of financial support is a big part of visa and green card applications. If this is a big problem, it's because the U.S. is approving applications without sufficiently reviewing that evidence (but more likely, it's a bogus excuse).