The Transportation Security Administration has shared information on more than 31,000 travelers with U.S. Immigration and Customs Enforcement from the start of Trump's presidency through February 2026, resulting in more than 800 arrests. The TSA's Secure Flight Program, originally designed for counterterrorism purposes in 2007, was repurposed to identify individuals for immigration enforcement at airports. Specific cases of airport arrests have drawn criticism, including a college student detained while traveling from Boston to Texas and a mother arrested at San Francisco International Airport. Democrats and immigration attorneys have criticized the data sharing and increased ICE deployments at airports.