Which U.S. Cabinet members are always guarded?

I believe the following cabinet members are guarded at all times due to the importance of the posts they hold and its closeness to the presidential line of succession: Secretary of State, Secretary of Defense, Secretary of the Treasury, and the Attorney-general. read more

George Washington, the first U.S. President, organized his principal officers into a Cabinet, and it has been part of the executive branch structure ever since. Washington's Cabinet consisted of five members: himself, Secretary of State Thomas Jefferson, Secretary of the Treasury Alexander Hamilton, Secretary of War Henry Knox and Attorney General Edmund Randolph. read more