Barack Obama: “There's absolutely no question about it.”

They're meant to remind us of who we can be, to remind us of what's possible, so we can forge ahead.

America is currently experiencing anger and vision but we are looking for fairness and common sense and mutual respect."

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.

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