What was one reason that anti-immigrant hysteria swept the nation? Immigrants were associated with anarchism and communism. Foreigners were held to blame for the Depression of 1920. Americans felt a lingering hatred for the nations they had fought. Politicians believed that immigrants generally supported the opposition party.
"Americans felt a lingering hatred for the nations they had fought" would be the best option since there was a great deal of animosity following WWII for Germans, Jews, Japanese, and Italians.
