Final answer:
The supreme governing document of Phi Delt is its constitution, analogous to the national Constitution, which establishes the framework and laws of the organization.
Step-by-step explanation:
The supreme governing document of Phi Delt is its constitution. This document is akin to the Constitution of the United States, which is clearly stated as the "supreme law of the land" in Article VI. Like national constitutions, the Phi Delt constitution affirms the basic legal principles of the organization, delineating the structure of its governance, duties, and member rights.
The importance of a written Constitution cannot be overstated as it provides a blueprint for governing and ensures the rule of law. It includes provisions for limiting the role of government and details methods for formal and informal amendments, guiding the organization's national and federal identity while protecting religious freedoms and upholding the separation of church and state.