In 1976, the U.S. Supreme Court handed down its opinion in Buckley v. Valeo, a decision best known for prohibiting spending caps in election campaigns. Nearly a quarter of a century later, the troubling fallout of the Buckley decision has become clear: a campaign finance system in which candidates spend more time raising money than attending to voter needs; in which monied interests are entitled to drown out everyone else's voice; and in which the...