Barack Obama: “I can report to the American people and to the world that the United States has conducted an operation that killed Usama…”

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

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

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.

We’ve now fought a war, spent billions and billions of dollars, you know, put enormous strain on our military. A lot of people have died. And it feels like we’re back where we were before we started the war, except maybe a little bit worse…