In the United States of America, driver's licenses are issued by each individual state, territory, and the federal district rather than by the federal government because of the concept of federalism. Drivers are normally required to obtain a license from their state of residence and all states recognize each other's licenses for non-residents subject to normal age requirements. A state may also suspend an individual's driving privilege within its borders for traffic violations. Many states share a common system of license classes, with some exceptions, e.g. commercial license classes are standardized by federal regulation at 49 C.F.R. 383.

does a driver's license work in every state?
yes