United States banks do not tend to be organized towards meeting the needs of depositors who don't live in the united states and/or aren't authorized to live in the united states. Most of the higher yield accounts are limited to natural persons, so banking through a US company setup for that purpose isn't likely to get you the yields you're looking for, although it could likely get you FDIC protection at near-zero yields, which isn't nothing.

You might have better luck looking for an international brokerage that can let you transact in the US brokered Certificate of Deposit (CD) market. Many of those offerings are also FDIC insured, and the marketplace dynamics may mean the bank only transitively vets the customers, and brokerage vetting may be more flexible?

Of course, a lot of US brokerages also don't want to work with customers who don't live in the us and/or aren't authorized to live in the us.