Did some searches, but did not find any matches:
DHS Traveler Redress Inquiry Program (DHS TRIP)
Filing a Complaint
The Department of Homeland Security’s Travel Redress Inquiry Program (DHS TRIP) is a single point of contact for individuals who have inquiries or seek resolution regarding difficulties they experienced during their travel screening at transportation hubs--like airports and train stations--or crossing U.S. borders, including:
* denied or delayed airline boarding
* denied or delayed entry into and exit from the U.S. at a port of entry or border checkpoint
* continuously referred to additional (secondary) screening
Will be interesting to see if the system actually works for anyone...