This NYT piece on the push to rid New York hospitals of Caribbean medical students is worth a read. I think it's unlikely that Caribbean schools will be forced out of New York hospitals, as the financial incentive to keep the schools' funding is way too strong. It's worth considering, however, the fate and reputation of Caribbean schools.
It's interesting to note, too, that New York schools that have relied on their prestige to secure rotation slots may now be worried that they can't compete with the millions of dollars that Caribbean schools are spending to do the same.