Mayorkas: 'No Evidence' Migrants Brought by ISIS-Affiliated Network Planning to Harm U.S.

On Wednesday's broadcast of MSNBC's "Morning Joe," Homeland Security Secretary Alejandro Mayorkas reacted to a report that DHS identified more than 400 migrants who were brought to the United States by a human smuggling network affiliated with ISIS by stating that "we have no evidence that they are individuals plotting to harm the United States." And "We screen and vet individuals at the time of encounter. If we learn of derogatory information, we take enforcement action."