Introduction Karen Orren and John Compton; Part I. Principles: 1. A lighter touch: American constitutional principles in comparative perspective Gary Jeffrey Jacobsohn; 2. Understanding due process Donald A. Dripps; 3. Civil liberties and the dual legacy of the founding John W. Compton; 4. Political representation and the US Constitution Andrew Rehfeld; 5. Equality Ken I. Kersch; Part II. Structure: 6. Causes of action for enforcing the Constitution Ann Woolhandler and Michael G. Collins; 7. Federalism Barry Cushman; 8. Separation of powers Mark A. Graber; 9. Executive power and national security power Andrew Kent and Julian Davis Mortenson; 10. The Constitution and the administrative state Edward L. Rubin; Part III. Actions: 11. Constitutional judgment Howard Schweber; 12. Suits against officeholders James E. Pfander; 13. Habeas corpus Amanda L. Tyler; 14. Implementation and impact: the courts, the Constitution, and public policy John I. Hanley and Gordon Silverstein; 15. Constitutional law and social change: mapping pathways of influence Tomiko Brown-Nagin; 16. Balancing privacy and national security: a rule of lenity for national security surveillance law Orin S. Kerr.