In 1963 the Nixon family traveled to Europe , where Nixon gave press conferences and met with leaders of the countries he visited . The family moved to New York City , where Nixon became a senior partner in the leading law firm Nixon , Mudge , Rose , Guthrie & Alexander . When announcing his California campaign , Nixon had pledged not to run for president in 1964 ; even if he had not , he believed it would be difficult to defeat Kennedy , or after his assassination , Kennedy 's successor , Lyndon Johnson
his assassination
Assassination of John F. Kennedy
Richard Nixon