 The combined shock of Nikita Khrushchev's Secret Speech at the Twentieth Party Congress of the Communist Party of the Soviet Union and the Soviet invasion of Hungary led Smith to join the exodus from the party, led by the resignations of Smith, J.B. Salsberg, Harry Binder and Sam Lipshitz, that reduced the LPP to a small rump.He was subsequently written out of the party's history.After leaving the party, Smith found success as an entrepreneur in the pharmaceutical industry.