He has effected a sea-change in American constitutional...

He has effected a sea-change in American constitutional jurisprudence. His sophisticated revival of federalism, in particular, renews that which makes democracy work -- not in theory, but on the ground. It gives divergent voices a chance to be heard and prevail, not in one venue, but in 50. Had the Court heeded his wisdom more thoroughly, there would be less nonsense about red and blue division and far less cultural warfare.