These days the word is particularly toxic at the White House, where it has been hidden away to make the Affordable Care Act more palatable to the public and less a target for Republicans, who have long accused Democrats of seeking “socialized medicine.” But the redistribution of wealth has always been a central feature of the law and lies at the heart of the insurance market disruptions driving political attacks this fall. “Understand this is not a redistribution argument,” the president told his audience then. “This is not about taking from rich people to give to poor people. This is...