The Constitution of the United States · Art. II, § 1, cl. 8

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."

United States · 1787 and amendments I–XXVII
National Archives transcriptions of the 1787 parchment and amendments I–XXVII; original wording, including superseded provisions.
Passage preview. Read in context for the complete text, notes and references.