Let me be very clear: We monitor the risks of violent extremism taking root here in the United States. We don't have the luxury of focusing our efforts on one group; we must protect the country from terrorism whether foreign or homegrown, and regardless of the ideology that motivates its violence.

I have long been a proponent of a guest-worker program between the United States and Mexico, and in particular I have proposed that Arizona would be an ideal location for a pilot project.

What we're going to do with cyber-attacks - and we have already actually started - we started well before the executive order actually was issued - is working with the private sector, determine how best to share information, because, you know, we can't help until we know that there has actually been an attempted intrusion or attack. Information-sharing piece is very important.

I've appointed a task force to take a fresh look at the color-code system and whether we should retain it, change it or scrap it.

As part of our layered approach, we have expedited the deployment of new Advanced Imaging Technology (AIT) units to help detect concealed metallic and non-metallic threats on passengers. These machines are now in use at airports nationwide, and the vast majority of travelers say they prefer this technology to alternative screening measures.

The United States is the nation of innovation. And we have the best innovators, really, in the world. Our international property is one of our huge national economic assets. Yes, so to the extent that some are seeking to infiltrate our network, steal that information, not to have invest in the research and development that goes into innovation, that's a really big deal.

It would be unwise to say the least, irresponsible of us at the TSA, at the Homeland Security Department not to evolve our technology to match the changing threat environment that we inhabit.