Sholokhov joined the CPSU in 1932, and in 1937 he was elected to the Supreme Soviet of the Soviet Union. In August 1937, his best friend, the secretary of the Veshenskaya party committee, P.K. Lugovoi, was arrested. Sholokohov was due to take part in an international writers' conference, but he refused to leave the country while Lugovoi was being held. Stalin sent another official, Vladimir Stavsky, to investigate, and invited Sholokhov to visit him in the Kremlin. After their meeting, on 4 November 1937, Lugovoi and two other prisoners on whose behalf Sholokhov had interceded were released, but in a subsequent letter to Stalin, he complained that the people responsible for wrongfully arresting them had not been punished.