Janet Napolitano: “I absolutely believe we can secure our borders in a smarter, more effective way.”

if I build a 20-foot fence, somebody will come along with a 25-foot ladder.

The importance of this hearing and the importance of the support shown in the Senate for this legislation cannot be overstated.

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…

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