Constitutional Law Cases and Materials 12th 2008 Supplement - University Casebook: Supplement Author:William Cohen, Jonathan D.Varat, Vikram David Amar This is the 2008 case supplement to This 2008 casebook supplement to both the Concise and Unabridged Cohen, Varat, and Amar's Constitutional Law, Cases and Materials, 12th covers all the major aspects of constitutional law.