One of the key principles of a free society is that governmental power should be limited by national borders.
Here’s an easy-to-understand example. Gambling is basically illegal (other than government-run lottery scams, of course) in my home state of Virginia. So they can arrest me (or maybe even shoot me) if I gamble in the Old Dominion.
I think that’s bad policy, but it would be far worse if Virginia politicians also asserted extraterritorial powers and said they could arrest me because I put a dollar in a slot machine during my last trip to Las Vegas.
And if Virginia politicians tried to impose such an absurd policy, I certainly would hope and expect that Nevada authorities wouldn’t provide any assistance.
This same principle applies (or should apply) to taxatio