If you requested an SSN card as part of your visa application, U.S. If You Requested an SSN When You Applied for Your Visa An SSN will help you to work in the United States, to conduct business with a bank or financial institution, to pay your taxes or to be listed as a dependent on a tax return, and for other purposes. Each permanent resident needs a Social Security Number (SSN). Upon admission to the United States based on your immigrant visa, you will be a U.S. We are pleased you intend to immigrate to the United States.