WASHINGTON (CBS/AP) — The Obama administration said it will start telling some travelers if and why they are on a list of tens of thousands of people banned from flying to, from or within the United States.

The new policy is described in a filing in a federal court case. A traveler who has been denied boarding a commercial airliner can petition the government once to find out whether he or she is on the no-fly list and a second time for an unclassified explanation for why he or she is on the list.

The changes are intended to provide more transparency to a top counterterrorism program. But the American Civil Liberties Union says it doesn’t go far enough in giving travelers their legal due process rights.

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