Call from the United States Chamber of Commerce to verify if you are still in business and the address is correct. I guess this is legitimate. Time will tell.
Called to "Update" their records for my business. I only verified business name and address (which she knew) and my first name as owner. Once she asked for my last name, I asked who I was talking with. She said it was the chamber of commerce. She then claimed to be the "American" chamber of commerce. I tried to ask another question she said Thank You and hung up. Tried to call back ... it rang once and the silence.....