Barack Obama: “I think it's unacceptable to have a situation in which tails you win and heads I lose.”

It's a way to honor her trailblazing leadership, and inspire visitors to follow in her footsteps.

Every president here today, as different as we are, has tried our best to uphold the values that John McCain and Mitt Romney believed in no less than I did.

I obviously have a room in his head.

Now the ball’s in your court, Iowa.