In reading up on the case of Maher Arar this afternoon, I couldn't help but think back to a great quote a friend of mine recently sent:

The Fifth Amendment guarantee of due process of law applies to 'any person' who is accused of a crime by the Federal Government or any of its agencies. No exception is made as to those who are accused of war crimes or as to those who possess the status of an enemy belligerent. Indeed, such an exception would be contrary to the whole philosophy of human rights which makes the Constitution the great living document that it is. The immutable rights of the individual, including those secured by the due process clause of the Fifth Amendment, belong not alone to the members of those nations that excel on the battlefield or that subscribe to the democratic ideology. They belong to every person in the world, victor or vanquished, whatever may be his race, color or beliefs. They rise above any status of belligerency or outlawry. They survive any popular passion or frenzy of the moment. No court or legislature or executive, not even the mightiest army in the world, can ever destroy them. Such is the universal and indestructible nature of the rights which the due process clause of the Fifth Amendment recognizes and protects when life or liberty is threatened by virtue of the authority of the United States.

--Justice Murphy, in Yamashita

Is there any more eloquent description of the meaning and value of human rights than this?