It’s Not Over for Joe Biden

Joe Biden must be having flashbacks.

In early 2010, when Democrats lost a special election for the late Edward Kennedy’s Senate seat — and with it, their ability to overcome a Republican filibuster — Washington rose as one, an insistent chorus of grim reapers, reading last rites over the Affordable Care Act and Barack Obama’s presidency. By then, Mr. Obama had been through six fruitless months of negotiations with Republicans, followed by fierce internal battles between House and Senate Democrats over the details of the plan. The Massachusetts defeat seemed...