Randy Barnett: Did the challengers in King really ignore federalism? Their response

Liberals would rather pretend that conservative arguments don’t exist—at least it feels that way, sometimes. But on the eve of King v. Burwell, that is exactly what’s happening. Recognizing the significance that constitutional federalism could come to bear in interpreting the Affordable Care Act’s provisions for health insurance exchanges, some of the Administration’s defenders have begun to argue that their opponents have not even attempted to make a federalism argument in support of their challenge.