The U.S. Government Turned Away Thousands of Jewish Refugees, Fearing That They Were Nazi Spies

 https://www.smithsonianmag.com/history/us-government-turned-away-thousands-jewish-refugees-fearing-they-were-nazi-spies-180957324/

In a long tradition of “persecuting the refugee,” the State Department and FDR claimed that Jewish immigrants could threaten national security