Company registration isn't restricted at all. Some state's LLC can be single-person, non-resident filed, after all. The restriction you'll run up against is b

Company registration isn't restricted at all. Some state's LLC can be single-person, non-resident filed, after all. The restriction you'll run up against is being employed by the company you form, and having it support your visa. To do it the right way as a solo founder, you need to go the E2 Investor route. It's painful, but doable.