State although there are some things the state must do to get Fed highway money (like certain speed limits, etc)
state goverment
Each state handles laws concerning drivers licenses .
The Secretary of State's office issues the drivers licenses.
No, Virginia driver licenses are not in compliance with the Federal REAL ID Act. The state has filed for an extension.
No, Rhode Island driver licenses are not in compliance with the federal REAL ID Act. The state has asked for an extension.
No, South Carolina driver licenses are not yet in compliance with the Federal REAL ID Act. The state has applied for an extension.
State
Yes.
No. When you apply for a drivers license in your new state you are required to surrender your previous license.
Most of the controls over driving licenses in the United States is done at the state level. Each state has a Department of Motor Vehicles or equivalent. In a few states the issuance of licenses is at the county or town level (New Hampshire is an example). The federal government has issued certain guidelines for states to follow but they do not have the full force of law. For example, the federal government has requested that states verify citizenship when issuing licenses, but many states do not do this.
New York
Missouri
Basically, it's an identification number issued to you by the state.