Conservative Justice Antonin Scalia suggested on Wednesday that the Supreme Court could strike the "Cornhusker Kickback" from President Barack Obama's landmark health care overhaul without having to invalidate the whole law. He was right, in a way: The notorious provision isn't in the law. The "Cornhusker Kickback" was the derogatory nickname of one of several sweetheart deals designed to ensure that the law had enough votes to pass. Amid a public uproar, lawmakers ultimately stripped the measure from the law. But no one—not Scalia's eight colleagues on the highest court in the land, not Deputy Solicitor General Edwin Kneedler, there...