How did the government of non-Axis nations respond to the issues of genocidal war crimes in Europe?

Consideration of American responses to Nazism during the 1930s and 1940s raises questions about the responsibility to intervene in response to persecution or genocide in another country. As soon as Hitler assumed power in 1933, Americans had access to information about Nazi Germany’s persecution of Jews and other groups. Although some Americans protested Nazism, there was no sustained, nationwide effort in the United States to oppose the Nazi treatment of Jews. Even after the US entered World War II, the government did not make the rescue of Jews a major war aim.

Explanation:

which time period is this? or is this story fictional, i'm going to need more info to answer this question