I don't entirely disagree. But, it is not a Principle under the Constitution until it is a law duly voted on and passed by Congress and signed by POTUS. Government and citizens all abide by the same laws, regardless of political power. Policy is not born of principles. Principle is a rule that has to be followed, while policy is a guideline which can be adopted. Which would you choose to be obligatory? The Bill of Rights were the result of principles espoused and sought by our Founding Fathers, and enshrined in the Constitution.