Do I need a visa to open an LLC in the US?
No. You don't need an American visa, Green Card, or any immigration status to open and be a member of an LLC in the United States. US business law doesn't require nationality, residency, or physical presence from its members.
What's actually required
To register an LLC, what the state requires is: an available company name, a registered agent with a physical address in the state, and completed formation documents (Articles of Organization). None of these requirements involve the member's immigration status.
What about operating the company?
Here's the important distinction: being a member of an LLC doesn't require a visa. But if you intend to physically work in the United States for that company — not just manage it remotely from Brazil, but actually live and work there — that's an immigration matter, which requires its own authorization (a work visa or compatible immigration status).
Why this question is so common
The confusion is understandable: it seems counterintuitive that you could "have a company in the US" without any immigration authorization. But that's exactly what the law allows — managing remotely from Brazil is different from being physically present and working in the United States.
See how managing the company while living in Brazil works →
Next step
If your goal is eventually to live and work in the US, not just have the company, it's worth understanding separately which immigration paths might apply to your case.