We Already Got Rid of the Filibuster Once Before

Last week the House of Representatives passed H.R. 1, a bill that would make voter registration automatic, end partisan gerrymandering, strengthen campaign-finance law, and bolster oversight of lobbyists. It’s the most sweeping package of democracy reforms in generations. Yet the mood among most democracy reformers was not giddy excitement but resigned dismay: Although H.R. 1 has passed the House, it remains in the pile of campaign promises—a higher minimum wage, an assault-weapons ban, comprehensive immigration reform, the John Lewis Voting Rights Act, and more—that under current Senate rules need 60...