Enhancing Suspicious Activity Reporting Initiative Act (Sec. 2) This bill directs the Department of Homeland Security (DHS) to: (1) develop a strategy, by one year after this bill's enactment, to improve its operations and activities related to training, outreach, and information sharing for suspicious activity reporting to prevent acts of terrorism; (2) establish a working group to advise it on suspicious activity reporting; and (3) provide a briefing to the congressional homeland security committees on its operations and activities related to suspicious activity reporting.