President John F. Kennedy’s Grandson Blasts Robert F. Kennedy Jr. and Endorses Joe Biden Summary: Jack Schlossberg, President John F. Kennedy’s grandson, endorses Joe Biden for president, citing shared values of public service and courage. Schlossberg praises Biden's achievements, including job creation, infrastructure and green energy investments, and ending the country's longest war and the COVID pandemic. He criticizes his cousin, Robert F. Kennedy Jr., for exploiting the Kennedy legacy and urges support for Biden in the elections. ...