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

Why was this flagged? Aside from being absolutely terrifying (even as an American), it's directly relevant to large swaths of HN who are/might consider coming to the US to work on an H1B or similar visa or are looking to hire people in the same way.

Bad actors like to suppress discussion uncomfortable to them. They use ambiguity in rules to cover their actions as "just following the rules!" They know full well what they're doing and why.