WASHINGTON, July 2 -- The Capital Research Center issued the following commentary: * * * Republicans and Big Labor: The Two Minds of Tricky Dick By Michael Watson In 1960, Robert Kennedy's brother John F. Kennedy was elected president, bringing labor's liberal wing into the White House, as UAW leader Walter Reuther was an ally of the Kennedys. When Republicans nominated firebrand conservative Senator Barry Goldwater (R-AZ) for president in 1964, even the occasionally right-leaning Jimmy Hoff more PR