BTW, the Wansee Conference took place in January 1942, shortly after Lindbergh spoke and after the U.S. had entered the War against Germany. And after German reversals outside of Moscow. One could argue that Lindbergh was prescient, that the Wansee conference was at least in part a reaction to the U.S. entry into the War, when it became apparent to Nazis that they might not win the thing.
The Holocaust, organized genocide and mass murder, began immediately with the invasion of the USSR in June 1941. The development of the death camps and gassing was not really related to the US entry into the war.
Lindbergh’s “Tolerance is a virtue that depends upon peace and strength. History shows that it cannot survive war and devastations.” was a threat directed at US Jews. There was no tolerance in Nazi Germany.