Well, I did a small research and I couldn't find any cases of the US government discriminating foreign business owners by passport. There are several cases in the EU, but the US looks clear so far. Hence my interest in that location.
I was an e-resident for 10 years, had a company and paid all taxes, but this year they refused to prolong it due to my nationality. So, I don't recommend Estonia at all, they can easily screw you over at any time. :(
Since I'm looking for a replacement atm, what's the best US state to register a simple and cheap LLC for a foreigner?