Nearly two decades after Congress passed the Real ID Act, the law is finally set to be enforced. Starting Wednesday, the Transportation Security Administration will begin checking for Real ID-compliant identification at airport checkpoints.

Nearly 20 years after the passage of the REAL ID Act, the deadline to update to a compliant identification card arrives on Wednesday.

The U.S. government is now enforcing the use of Real ID, which requires users to have federally compliant identification to board flights, among other uses. The Real ID is a product of the Real ID