Barack Obama: “I congratulated President Nazarbayev on Kazakhstan's accession to the World Trade Organization.”

Your task is not to impose litmus tests.

a belief that our military and law enforcement owe allegiance not to any president or political party, but to the people and our constitution … a belief in the peaceful transfer of power

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 hope this center will serve as an affirmation of just how special, how precious our democracy truly is.