Yes, you are asked for your ID and Social Security number (SSN) when cashing out for more thanR$10,000 at a casino because of the Bank Secrecy Act (BSA): a U.S. law that requires financial institutions to report cash transactions overR$10,000.
Go to the cashier's cage at the casino where the chip was issued. Provide your ID and the chip itself. The cashier will verify the chip and exchange it for cash.