Being one of the most notable characters during the socialist movement during the early 20th century. He was there when socialism in the United States was probably at its height. So, I am curious about his views on the October revolution and the Soviet Union in its early times, and his views in Marxism in general.
It doesn’t quite answer you question directly but AFAIK most socialists and communists, even in the West, supported the Soviets until just after Khrushchev’s ‘Secret Speech’.