Do you already hold an FAA certificate or will you be converting it to one once you arrive here? (This is a requirement to fly U.S. registered aircraft). If you're converting to an FAA certificate, the flight review will be required in order to be able to act as PIC. Your foreign airline's currency will not count as it's not under FAA 121 regulations. The flight review is rather simple and if you are renting an aircraft while you are here, could easily be included in the rental checkout.