The Justice Department said last night that the Affordable Care Act's individual mandate has become unconstitutional. Even more importantly, it says the law's most popular provision — guaranteed coverage for people with pre-existing conditions — also has to go.
Threat level: The legal challenge at issue here may be somewhat of a long shot on the merits. But if it does ultimately succeed, it could toss out the hardest-fought and most significant parts of the ACA.
