Can someone tell me all the important US political people and what position they hold?

Question

I obviously know who the President and Vice President are, but that's about it. If someone could tell me who the other important US political figures are, what position they hold, and what that position does, I would really appreciate it!

Answer 1

Go here, they'll be able to help you: http://www.firstgov.gov/

Answer 2

Hillary Clinton is New York State Senator
She will become the first woman president in the history of the United States in 2008