""An Argument On The Duties Of The Vice-President Of The United States, As President Of The Senate"" is a political treatise written by Patrick Henry in 1827. The book argues that the Vice-President of the United States, who also serves as the President of the Senate, has a vital role to play in the functioning of the legislative branch of government. Henry contends that the Vice-President's power to cast tie-breaking votes and to preside over the...