On February 11, the Federal Election Commission filed this response in the U.S. Supreme Court, in Cao v Federal Election Commission, 10-776. The Court hasn’t yet decided whether to hear this case. The Republican Party argues that it should have been allowed to partially coordinate with one of its nominees, former Congressman Joseph Cao, last year. Federal Campaign laws restrict party spending in congressional elections to a greater extent than it restricts the spending of any other groups. Thanks to Justin Levitt for the link.