Barack Obama: “I encourage all citizens to help protect our environment and contribute to a healthy, sustainable world.”

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

At least one of our major parties has been captured by politics that is not that subtle about suggesting that ‘We the people’ means a certain kind of people.

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

Your task is not to impose litmus tests.