“Insurers and healthcare providers have already begun implementing changes in anticipation of Affordable Care Act reforms, and will continue to do so.

“States that had been waiting for the Supreme Court’s decision will also be taking action. For example, those that have chosen to implement their own insurance exchanges, rather than rely on the federal government to do so, will be scrambling to meet statutory deadlines.

“It is clear that the Supreme Court’s decision has important implications for healthcare reform. It is equally clear, however, that Congress’ actions in the wake of the decision could be even more important: Congress could repeal the ACA in part or in full, or defund its provisions.”

Madison holds joint appointments in the School of Law and the Bouvé College of Health Sciences.