If you want to set up your startup’s U.S. entity, find office space or meet with prospective investors, you can do that on a B-1 visitor visa for business. The L-1A visa for an intracompany transferee manager or executive is a fantastic option for founders who already have an operating startup outside of the U.S. and want to come to the U.S. to open an office and raise funds. If for whatever reason the L-1A is not an option for you or if you decide not to pursue an EB-1C green card and need to find another visa option when your L-1A expires, consider the O-1A extraordinary ability visa.