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.

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.

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

Well, you know, the violence is mostly in Mexico itself, at least the violence that people are worried about. And so we want to make sure that violence does not spill over into our communities that are along the border.

The United States and Arizona are both losing jobs to offshore locations.

One of the most striking elements of today's threat picture is that plots to attack America increasingly involve American residents and citizens.

Well, you know, I think in conversations with members of the Senate and others, they all recognize that the issue of immigration is important. It's important to our nation, it's important to our public safety, it's important to our security, it's important to our economic well-being moving forward. And it's not something that's going to go away.