There are exchanges in the United States. There’s a company called Coinbase that works out of San Francisco, U.S.A. We use it, and it is very to easy to set up an account there. They do not ask for a lot of personal information.
You can link your bank account to that service, literally convert a Bitcoin to U.S. dollars in minutes, and have it in your bank account in U.S. dollars within two or three business days. Again, we highly recommend it.