President Donald Trump tore into his niece Mary Trump after days of silence about her latest work.<br />Her recently published book is critical of the President and his family reports CNN.<br />Trump is calling her "a mess" and alleging she wrote "untruthful things."<br />The tell-all book is "Too Much and Never Enough: How My Family Created the World's Most Dangerous Man."<br />It went on sale Tuesday and portrays the President in an unflattering light.<br />In the series of tweets Friday, Trump also called his former national security adviser a "lowlife dummy."
