Vice President Exempts His Office from the Requirements for Protecting Classified Information

Washington, D.C. — The Oversight Committee has learned that over the objections of the National Archives, Vice President Cheney exempted his office from the presidential order that establishes government-wide procedures for safeguarding classified national security information. The Vice President asserts that his office is not an “entity within the executive branch.”

Which branch of government does his office fall under, I wonder?