The no-fly list dramatically expanded following the attacks of September 11, 2001, with tens of thousands of names added, leading to numerous complaints of errors, including high-profile incidents with a US Congresswoman Loretta Sanchez and British singer Yusuf Islam.

The Homeland Security Department announced on February 21 the launch of the DHS Traveler Redress Inquiry Program, accessible via a secure website at https://www.dhs.gov/trip.

Passengers can complain if they believe they have been incorrectly denied boarding a flight, forced to go through additional security screening, or otherwise faced problems trying to enter the United States.

The security department added that it has reviewed every name in the no-fly list "to ensure that only individuals currently posing a threat are included."

Airlines must check each the name of passengers traveling to the US against the list, which places travelers into two categories -- those who are banned from flying and those who must undergo additional security checks.