Last week, arriving home from a weekly tutoring visit, I saw an early birthday present. Not only that, Santa had come early this year, when a book by Randy E. Barnett and Josh Blackman arrived.This column does a minireview of the book and then addresses a few other items in the world of rule of law.A Constitution primerBarnett, a professor at Georgetown University Law Center, and Blackman, an associate professor at the South Texas College of Law Houston, have written and published an excellent multimedia platform, &ldquo …