A House Republican is sounding the alarm over how the Transportation Security Administration screens agents from foreign countries following a hearing on TSA’s relationships with America’s adversaries.

TSA uses the passports and information provided by foreign countries, including state sponsors of terrorism, to vet agents flying directly into the United States, Melanie Harvey, TSA’s executive assistant administrator for security operations, testified at Tuesday’s House Homeland Security Subcommittee on Transportation and Maritime Security hearing.