Two years ago, when President Obama signed the Affordable Care Act into law, the idea that its individual mandate provision was unconstitutional was laughable. There was no case law, no precedent, and frankly, no serious argument that the federal government's Commerce Clause power didn't give it the authority to mandate purchase of health insurance if it wanted to. That's why Democrats didn't bother looking for a clever alternative—many of which were available—in order to avoid including an explicit mandate in the law. They didn't think they needed to. Of course it was constitutional. Even Randy Barnett, the law professor who popularized the activity/inactivity distinction that opponents latched onto as their best bet against the mandate, initially didn't really think it was anything but a long shot.