FILE - In this Sept. 15, 1959, file photo, President Dwight Eisenhower and Mamie Eisenhower pose with Soviet Premier Nikita Khrushchev and Nina Khrushchev at the White House prior to a formal dinner in honor of the Russian visitors. Khrushchev became the first Soviet leader to visit the U.S. (AP Photo/Bob Schutz, File)