Did the United States help the Jews in the Holocaust?
Yes America helped the Jews in the Holocaust.
During the Holocaust (that is the actual genocide) the only help that the U.S. or any Allied country gave was indirect - by defeating Germany. There was no military action targeted at stopping the Holocaust itself.
By the time the Americans and other Allies reached the concentration camps it was far too late. About six million Jews had already been murdered. For most of World War 2 the Allies did not want to know about the fate of the Jews, although they were receiving regular reports about what was happening.