The JAC broadcast pro-Soviet propaganda to foreign audiences, assuring them of the absence of antisemitism in the Soviet Union. In 1943, Mikhoels and Itzik Feffer, the first official representatives of the Soviet Jewry allowed to visit the West, embarked on a seven-month tour to the United States, Mexico, Canada and the United Kingdom to increase their support for the Lend-Lease. In the US, they were welcomed by a National Reception Committee chaired by Albert Einstein and by B.Z. Goldberg, Sholem Aleichem's son-in-law, and American Jewish Joint Distribution Committee. The largest pro-Soviet rally ever in the United States was held on July 8 at the Polo Grounds, where 50,000 people listened to Mikhoels, Feffer, Fiorello H. La Guardia, Sholem Asch, and Chairman of World Jewish Congress Rabbi Stephen Samuel Wise. Among others, they met Chaim Weizmann, Charlie Chaplin, Marc Chagall, Paul Robeson and Lion Feuchtwanger.