The Department of Health and Human Services is improperly hiding health insurers' requested rate increases from the public -- in violation of the Affordable Care Act, according to a new lawsuit from a former administration health official. States are generally charged with reviewing health insurers' proposed rate increases, but HHS conducts reviews for several states that don't have an effective review program. HHS hasn't lived up to its obligation to make the rate filings available before they take effect so the public has a chance to comment on them, according to the lawsuit.