The September 2016 "Terror Threat Snapshot" provided by the House Homeland Security Committee focuses on "The ISIS [Islamic State of Iraq and Syria] Terror Threat in America". Some of the key points include: " Islamist terrorists will continue to pose a significant threat to the United States and its allies -- ISIS and its supporters, undeterred by battlefield setbacks, have now been linked to 105 plots targeting Western interests globally.  ISIS, al Qaeda, and other Islamist extremists have built a global network of sanctuaries they can leverage for directing and inspiring terrorist attacks.  Radical Islamists are exploiting everything from social media applications, including encrypted technologies, to refugee flows to improve their ability to recruit adherents and conduct terror operations."
House Committee on Homeland Security: https://homeland.house.gov/