Barack Obama: “My thoughts and prayers go to those who have been affected.”

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 think when you understand the complexities of America and the contradictions of America, I don’t think it makes you love it less. I think it makes you love it more.

It shows me somebody who’s not focused on the American people and the job they’re supposed to do.

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