The year we diplomatically recognized was 1933 which was FDR’s first term. The Holodomor dated from 1932 to 1933. I suppose he might have been unaware.
Remember this was a time when Liberals were denying anything was wrong with Russia or with its recaptured satellites. You probably know about the New York Times reporter Walter Duranty who knew full well about Stalin’s crimes and still covered them up. He was like many Putinistas are today.