The Center for Public Integrity has sued the U.S. Department of Health and Human Services, seeking a wide range of records concerning oversight of Medicare Advantage health insurance plans for senior citizens. The suit, filed today in U.S. District Court in Washington under the Freedom of Information Act, argues that officials have yet to release any documents sought by the Center for more than a year. Federal law generally requires a response within 20 working days. "The information about Medicare Advantage that we are asking for should be readily available to the taxpaying public. There's no excuse for ignoring our request," said Bill Buzenberg, the Center's Executive Director.