[Whenifhow]

Mr. Jonathan Turley
Professor
George Washington University Law School

http://judiciary.house.gov/hearings/113th/12032013/120313%20Turley%20Testimony.pdf

Find the other testimony documents here
http://judiciary.house.gov/hearings/113th/hear_12032013.html

[thouworm]

Mr. Nicholas Rosenkranz
Professor, Georgetown University Law Center

He wrote the ""Subjects of the Constitution," the single most downloaded article about Constitutional interpretation in the history of the Social Science Research Network."

Brief Volokh Conspiracy blog post about "Subjects of the Constitution" here