Janet Napolitano: “In my view, this is an urgent security matter.”

Well, I think we all ought to be quite concerned. Because as we have seen develop over time, and particularly during the last few years, words are quickly being turned over into actual violent actions.

When you build a 12-foot wall, they will find a 14-foot ladder, or they will tunnel under it, or they will find other ways to get around, if we don't have a comprehensive system of identifying who is valid to be in this country and who…

I am in favor of creating an effective guest worker program to regain true control of the United States-Mexican border.

Climate change was one of the ``greatest challenges of our time.''