Barack Obama: “I promise you, your vote matters.”

Now the ball’s in your court, Iowa.

We designed the center not to be some lifeless mausoleum.

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

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…