Barack Obama: “I think the most important thing is for the United States to get engaged right away.”

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

In forming our union, the founders fell terribly short of the Declaration's promise, leaving slavery intact, allowing states to restrict the franchise to white men who owned property.

Your task is not to impose litmus tests.

They're meant to remind us of who we can be, to remind us of what's possible, so we can forge ahead.