Jack Schlossberg, the only grandson of President John F. Kennedy, was not among the many people poring over the new trove of government files about Kennedy’s assassination when it was released Tuesday. Instead, Schlossberg was on social media criticizing President Donald Trump, Republican lawmakers and the news media over the handling of the files.

Jack Schlossberg, the only grandson of the 35th U.S. president, said that the Kennedy family had not been notified, with exception of Health Secretary RFK Jr.

President John F. Kennedy’s only grandson, Jack Schlossberg, took aim at President Donald Trump as thousands of documents relating to the 1963 assassination were released, saying the Republican is “only being interesting in JFK’s carcass.