TSA PreCheck for non-U.S. citizens allows travelers from certain countries to enjoy expedited security screening at U.S. airports. Non-U.S. citizens can access TSA PreCheck benefits through membership in Global Entry, a U.S. Customs and Border Protection program. Eligible travelers include those from Visa Waiver Program countries and Canadian NEXUS members. The process involves applying for Global Entry, which includes a background check and in-person interview. Once approved, members receive a Known Traveler Number (KTN) that facilitates quicker airport security, with less invasive procedures and shorter lines, streamlining the travel experience significantly.