The greatest threat to U.S. and global security is no longer a nuclear exchange between nations, but nuclear terrorism by violent extremists and nuclear proliferation to an increasing number of states.

I don't think we should ever accept the idea that someone can come along and take away our safety and our freedom.

Secularists are wrong when they ask believers to leave their religion at the door before entering into the public square. Frederick Douglass, Abraham Lincoln, Williams Jennings Bryan, Dorothy Day, Martin Luther King - indeed, the majority of great reformers in American history - were not only motivated by faith, but repeatedly used religious language to argue for their cause. To say that men and women should not inject their "personal morality" into public policy debates is a practical absurdity.

Every three weeks, we bring online as much solar power as we did in all of 2008...That’s why, over the past six years, we’ve done more than ever before to combat climate change, from the way we produce energy, to the way we use it.

As long as countries like China keep going all in on clean energy, so must we.

My only agenda for the next two years is the same as the one I’ve had since the day I swore an oath on the steps of this Capitol — to do what I believe is best for America.

Keep guns out of inner cities-but also problem of morality.