Janet Napolitano: “We are a Nation of laws and a Nation of immigrants.”

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

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…

We have no tolerance for it.