text: U.S. Constitution, Article II Section I: "Before he enter on the Execution of his Office, he shall take the following Oath or Affirmation:—"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States."  Clearly, the Constitution recognizes the Judeo-Christian principle observed by many that swearing an oath in God's name is forbidden.  
  
  The U.S. Supreme Court opens with the prayer, "God save the United States and this honorable Court."