Our open, diverse society is an asset in the struggle against terrorism, not a liability. It makes us stronger and more resistant to radicalization. And this raises a larger point about the future of our country. America is strongest when we all believe that we have a stake in our country and our future. This vision has sustained us from the beginning. The belief that, yes, we are all created equal and the journey we have made to turn that into reality over the course of our history, that we are not a land of winners and losers, that we should all have the opportunity to live up to our God-given potential. And we have a responsibility to help others do so as well.