I'm the Canadian who was detained by ICE for two weeks

This is horrible and scary, why border guards are even giving the authority to revoke visas is beyond me. When people think about giving cops/guards authority like this they need to be picturing the dumbest bully from their grade school. That's who is going to be using the power

Every country is like this. Israel is the scariest but I remember decades ago crossing into Switzerland by train and in the middle of the night being woken up by border guards with barking German shepherds asking for my passport. I have so many stories it’s funny. On top of the other stories I’ve already posted, my friend who is Canadian drove into Buffalo for dinner and on his way back, they asked him where are you going. He answered “Canada” and they detained him and pulled apart his car looking for drugs. He was detained for hours until they let him go.

"Switzerland by train and in the middle of the night being woken up by border guards with barking German shepherds asking for my passport"

What is exactly wrong here? They checked your passport and went on their way, that is how it works.

Nothing wrong. The previous poster claimed that the US Border patrol was excessively scary but my point is this happens everywhere around the world.

The part OP is scared of and points to is some border guard revoking your visa, which probably implies you losing your job and having to leave the country you live in. This is scary because it is a very big, bad outcome to be totally in the authority of a random border guard to decide. Waking out by guards and dogs barking on a train is scary in its own right the moment it happens, but we are talking about totally different things whose only intersection is "border guards" and the emotional category of "scared".

It's not nonsense, people are following all the rules and then having some thug with no ability or willingness to understand the situation revoke their visa. This can and will ruin lives I don't see how you're not seeing the problem here