This is a response to D.S. Law & M. Versteeg, The Declining Influence of the United States Constitution (2012) 87 New York University Law Review 762. Of the many questions raised by Law & Versteeg's important article, I want to focus on two. First, as a methodological matter, do they measure constitutional convergence and divergence in the right way? Second, what is the relationship between quantitative, large-n work of the genre represented by Law and Versteeg's article and small-n, qualitative work that has hitherto been the favored methodological approach in comparative constitutional law and politics?