As divined by George Will in his column No Checks, Many Imbalances:

“Whenever the nation is at war, the other two branches of government have a radically diminished pertinence to governance, and the president determines what that pertinence shall be. This monarchical doctrine emerges from the administration’s stance that warrantless surveillance by the National Security Agency targeting American citizens on American soil is a legal exercise of the president’s inherent powers as commander in chief, even though it violates the clear language of the 1978 Foreign Intelligence Surveillance Act, which was written to regulate wartime surveillance.”