The very definition of a dictatorship is a system that puts a ruler above the law
Bruce Schneier's security journal entry today is scary and important reading regarding the crucial issue behind the recently revealed Presidential authorization of unlawful NSA spying. As Bruce says, this isn't about spying on Americans, though that is an issue in and of itself. It is about the dangerous notion of the President's being above the law.
The result is that the president's wartime powers, with its armies, battles, victories, and congressional declarations, now extend to the rhetorical "War on Terror": a war with no fronts, no boundaries, no opposing army, and -- most ominously -- no knowable "victory." Investigations, arrests and trials are not tools of war. But according to the Yoo memo, the president can define war however he chooses, and remain "at war" for as long as he chooses.
This is indefinite dictatorial power. And I don't use that term lightly; the very definition of a dictatorship is a system that puts a ruler above the law. In the weeks after 9/11, while America and the world were grieving, Bush built a legal rationale for a dictatorship. Then he immediately started using it to avoid the law.
This is, fundamentally, why this issue crossed political lines in Congress. If the president can ignore laws regulating surveillance and wiretapping, why is Congress bothering to debate reauthorizing certain provisions of the Patriot Act? Any debate over laws is predicated on the belief that the executive branch will follow the law.