A report earlier this week said millions of driver's licenses, including that of Defense Secretary Pete Hegseth, may have been leaked on the dark web.
Florida officials had asked the justices to hear a lawsuit accusing California and Washington of improperly granting licenses to an immigrant accused in a fatal crash.
The Transportation Department announced last week that it was withholding the funding until New York revokes the driver's licenses and permits after the state failed a Federal Motor Carrier Safety Administration audit last year.
As Kansas invalidates hundreds of licenses and birth certificates, transgender people say their constitutional rights have been violated.