My question is why not go to SV if you are going to leave your home country for startup anyway.
1)Invest 1M+ of his own money
2)Be a superstar with hundreds of publications and experience
3)Come as a tourist and pray everything works fine in 3 months
4)Fall in love and get married(...in the Valley?)
http://travel.state.gov/content/visas/english/law-and-policy...
In that case, it's very difficult to sponsor yourself or your co-founders for an H1-B
2) once the SV bubble pops, the global silicon valleys will start to thrive.