The man behind the recent London attack was yet another homegrown terrorist. And a new report says the U.S. is dangerously ill-equipped to defend against this kind of attack. It notes that the travel ban doesn't address a threat that could be hiding in plain sight. What's being done to tackle homegrown terrorism? 1A Guest host Indira Lakshmanan is joined by Peter Bergen, CNN's national security analyst, Matthew Levitt, director of the Stein Program on Counterterrorism and Intelligence at the Washington Institute for Near East Policy, Kathleen Puckett, clinical psychologist who spent 23 years as an FBI Special Agent investigating cases of domestic and international terrorism and Mohamed Ahmed, creator of "Average Mohamed," a cartoon series that challenges intolerance and radical extremism.