While the state of Alabama has not accepted any Syrian refugees so far, the southern state's governor has said that he "will not place Alabamians at even the slightest possible risk of an attack on our people".
In Michigan, where it has been reported that 200 Syrians have been resettled in the past year, Governor Snyder has said he will suspend the acceptance of new refugees until the US Department of Homeland Security "completes a full review of security clearances and procedures".
At the scene: Suzanne Kianpour, BBC News Washington