Here's my stance: They should be limited to those career fields that we actually have a national interest in promoting. We need doctors, nurses, engineers and actual real scientists, like physicists. Without an effective national campaign to promote these careers we really could end up being worse off. These career fields are already heavily dominated by Indian and Chinese international students. We don't want our national defense or our infrastructure to be dependent on foreigners, particularly the Chinese. That being said, what we have now is not effective and needs to be scrapped. We need to start over, and we need to make sure that we don't flood critical roles with leftists and gender studies acolytes as we do it. That cancer needs to be excised from the culture.