Action by the United States against Adolf Hitler's campaign of genocide against the Jews was:
1) reprehensibly slow in coming
2) included the admission of large numbers of Jewish refugees into the United States
3) involved the bombing of rail lines used to carry victims to the Nazi death camps
4) slow in coming, because the United States did not know about the death camps until near the end of the war
5) a major reason the U.S. fought World War II