When a political party takes out negative advertising targeting a candidate, should those ads be subject to campaign spending limits? This was the questions before the U.S. Supreme Court yesterday in a case involving in the Republican Party of Colorado versus the Federal Election Commission or FEC, a case which some say puts campaign finance laws at odds with the First Amendment. Groups like Common Cause and Public Citizen filed amicus briefs on behalf of the FEC, while the ACLU both the Republican and Democratic National Committees support the Colorado GOP’s case. Here to explain, and debate this case is Lisa Rosenberg, an attorney with the Center for Responsive Politics FEC Watch Project.