 because of some of the individuals involved in smuggling migrants to the border that led us to want to take extra care, said a senior Biden administration official. And out of an abundance of caution, make sure that we exercised our authority in the most expansive and appropriate way to mitigate risk because of this potential connection being made. The official added that since ICE began arresting migrants brought to the U.S. by the ISIS-linked smuggling group several months ago, no information has emerged tying them to a threat.