http://www.helium.com/knowledge/272520-the-history-and-role-of-the-vice-president-of-the-united-states.xml Helium.com > Political & Economic Theory > The history and role of the Vice President of the United States en-us Copyright Helium.com Mon, 07 Sep 2009 12:20:03 GMT Mon, 07 Sep 2009 12:20:03 GMT