Not if you hire sole proprietor. You just have to pay such person an invoice like you would buy something from abroad.
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.