I once had this very conversation with an employee in Tel Aviv. She stated, in no uncertain terms, that the US did not do enough to stop "the holocaust". When I told her that over 360,000 American's died, including some of my relatives to stop Hitler she said "it obviously wasn't enough. When these things happen all of humanity must respond." When I then asked her what she and Israel were doing about the Sudan she gave me the same hypocritical answer you just did.
It was the US that sent ships with Refuge Jewish children back to Germany and directly into the gas chamber. FDR refused to let them in. Groups of Rabbis, after raising the money themselves within the Jewish community went to the president and told him that it would not even burden the tax payers- the Jewish people would support them. And still he said no. Those children died, as did the people on other ships.
Those American soldiers did not fight to free Jews. Although there were plenty of Jewish soldiers who died among them. My mother’s cousin died in the Battle of the Bulge. They did not go there to free the Jewish people from the camps. So, don’t even try to insinuate it.