The Transportation Security Administration is proposing an $18 fee for travelers who arrive at the airport without an acceptable form of identification.

Since May, TSA has stopped accepting standard state-issued IDs and drivers licenses as valid identification. Passports, military IDs and REAL ID-compliant drivers licenses are among the acceptable documents.

Currently, passengers without proper identification undergo an identity verification process that includes additional screening. Under the TSAs proposed rule, travelers would pay an $18 fee for that process.

TSA's proposal launches a period of public comment. It is unclear when exactly the proposal could be enforced.

TSA says the fee would help cover costs associated with enhanced screenings, including software and staffing. It wou

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