Christmastime Attacks News Today

>> sandra: were less than one hour away from a hearing on worldwide threats facing our nation. top counter terrorism officials set to testify in front of the house homeland security committee and amid recent threats from isis calling for christmastime attacks in the u.s. and europe. lets bring in texas congressman mike mccaul chairman of the house homeland security committee. thank you for coming on with us this morning. obviously a lot will be happening in the next hour. what will we learn abou...