Four Models:
I see that the secretive and powerful movement to think of all constitutional amendments in terms of four models — and then, importantly, to focus on why no one model can work and the merits of using different models in different contexts — has taken on new life with a recent lecture by Mark Tushnet. [Insert Vincent Price laughter here.] In all seriousness, the basic aproach has been around for a while; still, having recently been working on the last stages of editing to my Fourth Amendment paper, it's really interesting to see Tushnet's approach in the First Amendment context.