San Bernardino. or whether it is Bostonwhere I saw. firsthand. the resilience in spirit come forward that any physical attack can never conquerwe see that same spirit and resolve in the people of Brussels and Belgium today. The flow of foreign fighters. the traveling that they do. and the extenuating threat that they pose have been our top securityrelated concerns here in Congress. Congress and the administration have taken actions to address these issues and prevent the risk of such an attack here at home. We have tightened security restrictions for travelers from visa waiver countries who are known to have traveled to Iraq and Syria. We have sealed intelligencesharing gaps between Federal. State. and local law enforcement. as well as our international partners in the intelligence community.