In a five to four decision, the Supreme Court struck down as unconstitutional the aggregate limits on individual contributions that were part of the Bipartisan Campaign Reform Act of 2002.
Amid all the commentary on the decision, one point that I think isn't made enough is that it reflects poorly on President George W. Bush that he signed this unconstitutional bill into law, and that it reflects poorly on Senator McCain that he championed this unconstitutional legislation (which was also known as McCain-Feingold.) They all swear an oath to defend the Constitution.