Barack Obama: “Our prayers are with the families and loved ones of those suffering from this accident.”

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.

That's what I hope every visitor to this center takes away from their experience.

She knew she was going to mess me up, and she did it anyway."