Barack Obama: “I think even more is at stake.”

it was nevertheless important that we all play a part in assuring that our elected officials are accountable.

Your task is not to impose litmus tests.

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…

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.