SPRINGFIELD, Ill. (AP) — Illinois residents might not be able to use their driver's licenses at airports starting in 2016.

The Daily Herald reports the licenses don't meet requirements set by a 2005 federal law on IDs that was meant to increase security. Illinois doesn't require a birth certificate to get a driver's license, which an Illinois Secretary of State spokesman says is one of the law's mandates.

The spokesman says state legislators would have to approve funding for changes to driver's license requirements. The Secretary of State's office previously estimated it would cost $100 million to $150 million to be in compliance.

Driver's licenses meet the federal mandates in 22 states. As early as 2016, the Department of Homeland Security website says travelers with noncompliant driver's licenses would need another valid ID, such as a passport or military ID.

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