Hiring directly in other countries is difficult for all but the biggest companies (who probably already have offices in those countries and have been hiring in those countries for years).
I work in Poland for company from the Netherlands and I know other people who have "single person company" that are working for companies in UK and US. I even did some work for company based in UAE.
You just have to spend time looking where to find such people. Then of course you have to do trial period to see if they won't flake out but that would be the same as if you would hire someone from US.
Regardless of any actual enforcement, most US companies don’t want to deal with the potential issues of getting tangled up in foreign labor disputes, or getting tangled up in foreign courts over IP disputes.