Except this presupposes that Hitler and the Nazi elite were not very anti-semetic which they were. It’s really easy to say they could’ve stopped, but remember that at the time America had Jim Crow laws. If we’d begun to lose the war would we have abandoned Jim Crow in order to win. I really don’t think so. In fact, during the first 6-12 months of the war we were losing yet there wasn’t any great call to put black soldiers side by side with their white brothers. We kept Black soldiers in a lesser and subservient position because it fitted our social needs at the time. The same was absolutely true with Germany.
As for Sorte you’re absolutely right, but in Germany it was always a bit more virulent. I attribute this to the great antagonism that has historically existed between the slavs and germanic peoples and unfortunately jews got lumped in all the same. However, the example you provided of Norway is good, but lets not forget that one of the reason relatively few French or Italian jews died in the holocaust was because Spain, Franch and Italy all had inquisitions whose intent was to drive the jews from Europe. In fact the inquisition in Italy and Spain was still legally sanctioned although not in reality.