The Affordable Care Act (ACA) is either the most significant accomplishment or the most disastrous mistake in U.S. domestic policy over the past four years. President Barack Obama has embraced the (originally derisive) nickname “Obamacare” to describe the law, saying he now “kind of likes it.” Gov. Mitt Romney has promised to “repeal and replace” the law on his first day in office.

Michael Dukakis and Wendy Parmet offer their thoughts on how the next president — and Congress, and the Supreme Court — should deal with Obamacare, and how those decisions could affect the way “We the People” understand our relationship with the federal government.