I can understand immigration restrictions because they've always been in the interest of maintaining a healthy economy that can contribute plenty toward future infrastructure. This is just the play for as long as history is recorded. As long as we've had borders, and walls, fences, guards... It's common for countries to go through periods of restriction to only skilled workers, specific industries, etc. otherwise it's working internally on itself for a period.

But when you've got a booming GDP, restricting visas makes as much sense as having substantial poverty among citizens. Like sovereignty and protection of those within was never on the cards, it's just straight up fascism, as you said. You get the same idiots saying they're the most powerful military in the world capable of destroying anything—which isn't far from true—also saying a brown family is going to destroy the nation... Uh-huh. Sure... One of these things has to be a lie for both cannot be true.