I've been through customs all over the world for the past forty years, and US customs are some of the worst human beings I've ever encountered. Why is that function such a shit show?

Very familiar with the need for LEO dumping grounds, especially at the federal level, so that's been my working assumption but I've never asked.

Because it can be, and nearly every administration has a ‘tough on illegal immigration’ stance - because the US is so desirable to go to.

A good Great Depression economic reset + insane facist government will reset that a little - but it will still be better than a huge number of places on the globe. Even if the gov’t targets immigrants.

A huge number of places with massive populations of people who would love to come over.

What parts of the world?

I have found Asian countries, Japan and UK the same as US when it comes to customs experience.