U.S. Sen. Mark Kirk wants the federal government to alert American air travelers about which airports around the world are failing to routinely check passengers for stolen passports.

The Illinois Republican has proposed legislation to require the U.S. State Department to publish a list of those airports that do not check passengers against Interpol’s database of lost or stolen passports.

The issue came to light during the investigation into the missing Malaysia Airlines jetliner. Two Iranian passengers boarded that aircraft with stolen passports, though investigators say there’s no evidence either man had anything to do with plane’s disappearance.

Kirk told reporters in Chicago Friday that American travelers should at least be made aware of the potential security lapse when they travel to those countries.

Photo Credit: Malaysia's police chief, Inspector General Khalid Abu Bakar, addresses a news conference on the two passengers who had travelled onboard the missing Malaysia Airlines MH370 plane on stolen passports in Kuala Lumpur International Airport March 11, 2014. Edgar Su / Reuters