In recent stump speeches and policy remarks, Bill and Hillary Clinton have offered sharp criticisms of the partisan gridlock paralyzing Washington, signaling a potential 2016 campaign theme if Hillary Clinton chooses to run for president. The Clintons’ critiques in recent days have been explicitly aimed at congressional Republicans, who helped spur a 16-day government shutdown and potential debt default in October. But their remarks also seem to contain an implicit rebuke of President Obama’s failure to change Washington as he pledged when first running for the White House. The arguments suggest a way that Hillary Clinton could attempt to run...