why? has any immigration law been changed?

The orange dude is kind of putting people off.

yes, donny woke up the ancient racist anti-immigration, the blood & soil type crowd, but the economic benefits of immigration are still there (albeit with higher risks and higher hurdles).

I suspect this will simply make labor more expensive on top end of the talent curve

Worse: the law has become irrelevant

Revoking visas and deporting University students and professors.