1: I'm guessing it's mostly in blue states? 2: I think there's a real desire to sort of go hard on eliminating globalization in all ways. "America is for Americans" and all that. I think the ideology trumps economics considerations.

Florida hasn't been voting blue recently. Tourism accounts for 8% of their Gross State Product versus 3% for California.

California does bring in more tourism money, but it's still less percentage wise.

4d chess then.

Keep foreigners out to keep Americans more in the dark about how things operate in the outside world.

Don’t want any negative comparisons being made

You're assuming the goals are to improve rather than destroy.