I know Smit Patel is one Indian player who has taken it up. Willem Ludick is one who left South Africa to go to New Zealand and then left there to go to the USA. In a three years their team could look like one of the strongest outside of the test nations.Lot of Indian investment and lot of Asian diaspora. I do see a few other ethnicity players here and there. I also feel that giving Green Card after 3 years will attract talent from countries who will not get opportunity. Its not far that a player like Sanju Samson or Mohammad Amir or Alex Hales who do not get or will opportunity for their respective countries move to USA and play from them.
USA's team could actually be a WORLD XI team in the future