Because you are leaving the country they need to know who you are
no
For sure you need a passport. Also check this info if you come from Canada:
You need a passport to cross from America to Canada. While inside Canada, you don't need your passport, except for ID purposes.
Canada...really?
Yes
As of June 1st, 2009, you need a passport to travel from Canada to the US.
Yes.
To Canada you can; to Mexico you can't.
Yes you can, but you need a passport.
a passport for every individual in the car.
No but they need a passport if they live in Canada.
As of June 1, 2009 you need a Canadian passport to travel by land, sea or air from Canada to the US.