In a significant escalation of interior immigration enforcement, the Transportation Security Administration has routinely been providing full airline passenger lists to Immigration and Customs Enforcement, according to a New York Times report.

The practice began in March and involves several transfers per week of traveler data from TSA to ICE. It is part of a broader effort by federal authorities to identify and detain people subject to deportation orders before they board flights.

Under the arrangement, TSA supplies the full names of passengers flying into, out of, or within the United States.