Court of Appeals for the D.C. Circuit April 17, 2007, No. 06-5295 (Action Alliance of Senior Citizens v. Leavitt)

Opinion for the Court filed by Senior Circuit Judge WILLIAMS.

WILLIAMS, Senior Circuit Judge:

This case involves an effort on behalf of some 230,000 participants in the Medicare Part D prescription drug program to re*48sist — indeed to reverse — the government’s efforts to recover payments mistakenly made to those participants.