I don't know anything about this group but thought this might be of interest.
http://www.citizensforethics.org/press/pressclip.php?view=672A top 2 preview:
Sen. Bill Frist: The report accuses him of violating federal campaign finance laws in how he disclosed a campaign loan. It also calls for an inquiry over his recent sale of stock in HCA Inc., his family's hospital corporation. The sale has raised questions about possible insider dealing. Frist aides confirmed Friday that the SEC was investigating. They have denied claims of campaign finance violations.
• Rep. Roy Blunt: The report criticizes him for trying to insert provisions into bills that would have benefited, in one case, a client of his lobbyist son and in another case, the employer of his lobbyist girlfriend, now his wife.