A massive aviation industry clearinghouse that processes data for twelve billion passenger flights per year is selling that information to the Trump administration amid the White House’s new immigration crackdown, according to documents reviewed by the Lever.

The data — including “full flight itineraries, passenger name records, and financial details, which are otherwise difficult or impossible to obtain” for past and future flights — is fed into a secretive government intelligence operation called the Travel Intelligence Program and provided to Immigration and Customs Enforcement (ICE) and other federal agencies, records reveal.

Details of this program were outlined in procurement documents released Wednesday by ICE, which is a division of the Department of Homeland Security.