I would imagine that the quotas are to make sure that no single secondary culture becomes dominant in the US and creates a split culture. It's harder to cultura

I would imagine that the quotas are to make sure that no single secondary culture becomes dominant in the US and creates a split culture. It's harder to culturally assimilate many from one culture than a few from each of many cultures. Immigration without any limits could be very bad for the long term health and stability of the country. I think they should tack on a points system like Canada's to help the most qualified get into the country. Letting grad students stay without hassle is, in my opinion, a no brainer. Universities are far better judges of merit than the INS.