♪ >> harris: a fiery war of words escalating between the president and his former aid omarosa as she continues to plug her new book. the president's campaign has filed arbitration action against her for violating a 2016 confidentiality agreement. but omarosa is not backing down saying she won't be silenced after claiming the president used a racial slur on a recording. white house press secretary sarah sanders yesterday pushed back against those accusations. >> i can't guarantee anything but i can tell you that the president addressed this question directly. i can tell you that i have never heard it. i can also tell you that if myself or the people that are in this building serving this country every single day doing our very best to help people all across this country and make it better, if at any point we felt that the president was who some of his critics claim him to