ensure an attack like this never again breaches the halls of congress. i spoke with her exclusively about the threats members of congress are facing today and the challenges in keeping them safe. >> now as you evaluate the threat landscape, do you believe the biggest threat to america comes from within? >> i don't know that i would say the biggest threat comes from within, but domestic terrorism is certainly a concern. it is not a new issue. there have been for sometime violence that has occurred at women's health centers and animal rights activist and racially motivated extremism like the ku klux klan. what is heightened now is the political tensions within the country and the power of the internet that allows extremist, whether they are foreign radical jihadists or domestic extremists in the united states to connect with one another, to recruit,