Well, with the release of the latest West Virginia v. EPA decision (details here), it seems to me that once the rulings have begun to demonstrate clearly appalling consequences for the safety of US citizens and for the planet, as well as send an overt signal that may prevent federal agencies from properly regulating their charged duties, it’s time to consider reining in this court to prevent future erroneous actions.    See Ezra Klein’s excellent podcast interview with Columbia Law professor Jamal Greene for a wonderful discussion on the subject of improving the court – and not just changing it for reasons of partisanship.