The American Conservative has a recent article How to Break the Sanctuary States. Eigenrobot at X extracted a key section
That is why I recommend the president order the Department of State to cease issuing student visas to all foreigners who seek to matriculate at universities and schools located in sanctuary jurisdictions. Foreign students overwhelmingly attend universities in sanctuary zones, and they bring billions of dollars to pay tuition and living expenses ($40 billion a year nationally).
This steady stream of foreign students represents the Achilles’ heel of California, New York and Massachusetts—all three states representing major redoubts for non-cooperation with ICE. California alone has over 237,000 foreign students, and almost all of them pay the full tuition costs at the state’s overpriced universities.
Therefore, Trump should instruct his consular corps at U.S. embassies and consulates to cease issuing visas to all students seeking to enroll in universities in all 13 sanctuary states. The outrage will roar from China to India to Mexico. The visa pause should continue until ICE certifies the return to full cooperation of all state and local authorities on all deportation matters.
I have a natural conservatism that is suspicious of serious disruption, because it has unforeseen effects. This is somewhat balanced by a natural libertarianism that says "Lets worry about the foreseen effects first. Full speed ahead."
This would include medical schools, and I have a fair number of Indian and Eastern European practioners up here. They tend to have children more than the Chinese, American, and Western European doctors do. Boston is a sanctuary city and I think all of Massachusetts is a sanctuary state. New Hampshire is not a sanctuary state, but I don't know about Hanover and Lebanon. Looking it up, there are no sanctuary cities in NH at the moment and the legislature passed a bill outlawing them, so the supply line from Dartmouth-Hitchcock and Geisel remains intact. And Massachusetts? "The Princess Bride" said it best, as it did many things. "If I make him better, Humperdinck suffers?"
Am I that petty? Yeah, probably. And it would only be temporary, until they figured out which side their bread was buttered on.
Which come to think of it, for smart people they aren't very good at down there.