My 2 cents, from what I've been able to gather, the best resources in other countries are being paid comparably to US, or they've already migrated or set up a work visa with a US company. Talented developers know they're talented and will seek out other people who can weed them out from the group. It is a rare case that you run into a highly qualified developer in any country who is working for pennies on the dollar.
What about taking advantage of the back log of denied or pending, highly skilled U.S. Visa applicants? It seems to me that tech companies can't import them fast enough. I'm thinking it's time to go to the source instead.
