Not _this_ time but they were targeted previously: banning up to 75 countries from issuing visas, adding a $100k fee to the application, forcing visa renewals to go through consular processing instead of change of status, etc.

The end goal is to do end migration as a whole (especially from “certain places”) and expel all “undesirables”. To get there, they will test the waters, get the right precedents and judicial orders in place, and move the Overton window enough so the public sees these actions as “business as usual”.