Madison's nightmare: how the federal government became unchecked and unbalanced -- Checks and balances in law and history -- Iraq and the (unlearned) lessons of Vietnam: presidentialism and the pathologies of unilateral policy making -- Presidentialism, national security, and the breakdown of government lawyering -- Form over accountability: executive privilege, signing statements, and the illusion of law -- The president's personal bureaucracy: administrative accountability and the unitary Executive -- Recovering the Madisonian dream: visions of democracy, steps to reform.