Earlier quoted context omitted.
Most people did not know about the Holocaust until after WW2 started.
FDR/senior government and military officials in the US army knew. They made choices to focus on American interests at multiple points, even as they closed on victory on the European front, they prioritized strategic targets over concentration camps. The USSR ended up being the one to free most of the camps, and conquer most of Germany. Strategic targets are definitely important for protecting soldiers, but really the…
consider that the IDF provided they could get to Entebbe in Uganda at short notice, but failed to muster the moral courage to intervene in Rwanda.
So much for never again.