Why did the US government think internment camps were necessary during World War II?

After the attack on Pearl Harbor, the U.S. government claimed that forcibly relocating and confining Japanese Americans was necessary for national security, arguing it would prevent possible espionage or sabotage. The correct choice is “to protect national security.” This rationale was used to justify internment, though the policy was driven by prejudice and was not supported by evidence that Japanese Americans posed a security threat.

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