There's Constitutional Law

Then there's the Constitution established by our country's Founding Fathers.

Yes, there is a distinction, and starting this spring, the George Mason University School of Law will be requiring its students to take a new course that focuses "on a large number of important original legal sources familiar to the founding generation, ranging from Magna Carta and the English Bill of Rights to the Federalist (and Anti-Federalist) Papers, along with constitutional debates at the Philadelphia Convention and in the First Congress." h/t Bench Memos