I want to know the answer to the following question:
What does Hamburger feel the modern concept of separation of church and state is rooted in?
All the background I'm provided with is that "Philip Hamburger, Columbia Law school professor and prominent critic of the modern understanding of the concept, maintains that the modern concept, which deviates from the constitutional establishment clause jurisprudence, is rooted in American anti-Catholicism and Nativism.[citation needed]". Is that enough to answer the question?