Barack Obama: “So please give Matthew a big round of applause.”

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.

Of course, we did not accomplish everything we set out to do. No administration does. Some of the exhibits reflect unfinished business, in some cases, my own shortcomings and mistakes, in some cases because - as a sign I kept on the…

I was a little tall for it.

There’s no doubt that we are going through a period right now of disruption, polarization.