Tense exchanges and criticism at Homeland Security hearing.

Sen. John Kennedy questioned Homeland Security Secretary Alejandro Mayorkas at a Senate hearing about his support for an assault weapons ban, but was unsatisfied with his answers. Mayorkas backed an assault weapons ban but did not provide a definition. After a tense exchange, Kennedy surprised Mayorkas by patting him on the shoulder and shaking his hand. Mayorkas has faced criticism from Republican lawmakers over the ongoing migrant crisis and flow of fentanyl into the U.S.