You show me a 50-foot wall and I'll show you a 51-foot ladder.

If American schooling is inadequate now, just imagine how much more obsolete it will be when today's kindergarten students graduate from high school in just 12 years.

Public schools were designed as the great equalizers of our society - the place where all children could have access to educational opportunities to make something of themselves in adulthood.

Bob Mueller for the FBI, myself, met with a particular group of executives that have major roles in the so-called ISPs, the Internet service providers, what they could possibly do. We have met with leaders in private industry in terms of the core critical infrastructure of the country as to what they can possibly do with cyber-attacks.

You can't imagine a world, quite frankly, without a safe and secure aviation system. And so our job is to really focus on that, and what we need to do to keep it safe and secure.

Such a system would be very, very expensive and laborious to have, given the kinds of border we have. Scientists and engineers aren't even sure they have the technology to make it work

It is fair to say there are individuals in the United States who ascribe to al-Qaeda-type beliefs.