Barack Obama: “The time to act is right now.”

The success of this experiment was never a given.

And there’s no reason to suggest that we can’t get through this one either.

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.

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.