Barack Obama: “We need you now more than ever.”

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

It's a way to honor her trailblazing leadership, and inspire visitors to follow in her footsteps.

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.

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…