If we did the federal way, we would not have a single "gay marriage" state or many other situations. States rights are a double edged sword.

You might enjoy Dr Bill O'Brien's show. He focuses on constitutional history and civic engagement. He is a professor and the shows can be a bit dry but you can rest assured by the end of the show he will drop the hammer and bring the entire discussion into focus on the most salient points.

Until it isn't.