Legislation in the USA varies a lot, unless we talk about immigration. Which in my case here in EU, as spouse of EU citizen, is also being scrutinized by politicians here in Denmark [0].
[0]: https://www.thelocal.dk/20190327/opinion-stop-being-so-hosti...
edit: forgot to mention. My worst employer in the USA was ironically a Danish company (MeyersUSA hospitality group). They blatantly violated labor laws and sanitation requirements (sadly they managed to erase some of the negative reviews from Glassdoor).