Might U.S. born runners have a better chance to develop through the college system if all available track and X-C scholarships were offered to them? Likewise, might more opportunities to run at the college level exist for U.S. born runners if foreign runners were discouraged from competing for U.S. colleges (solely by virtue of not having the financial means)?
On a superficial level it may seem discriminatory, but I also assume that college coaches can offer scholarships without regard to nationality. (Please correct me if, in fact, they must adhere to any sort of quota.) To me, this approach would be more in the interests of national loyalty (for lack of better word) than discrimination.