You can explore business options while on a B-2 visa, but you can’t actively work or manage a business. To operate legally, you’ll need a different visa category.

The E-2 Treaty Investor Visa is a good option if Guinea has a treaty with the U.S. allowing investment visas. You’d need to invest a substantial amount and actively manage the business. This visa lets you live and work in the U.S. while running your company.

If the E-2 isn’t available to you, consider other routes like the EB-5 Investor Visa, which requires a higher investment but leads to permanent residency. You could also partner with a U.S. entity or explore L-1 options if your business has international branches. Each visa type has its own requirements and timelines. It’s best to consult an immigration attorney before taking action.