Two sponsors of the nation's Bipartisan Campaign Reform Act (BCRA) have filed suit against the Federal Election Commission over its alleged failure to enforce the regulations by not blocking the spending of unlimited donations by so-called 527 groups in the presidential campaign. Reps. Christopher Shays, R-Conn., and Martin Meehan, D-Mass., filed the suit in federal court Tuesday, and Senate sponsors John McCain, R-Ariz., and Russ Feingold, D-Wisc., have announced that they will file briefs supporting the action.

Review the Shays-Meehan complaint [PDF]. AP has more. The FEC has campaign finance law resources available here, including the text of the BCRA. The Campaign Legal Center has posted a Campaign Finance Guide, as well as a release on the pending support of Sens. McCain and Feingold. Roll Call has more on the suit, while Rep. Shays has issued a press release.