Why were people so concerned about how to address the present

During world war 2 mexican workers came to the united states as part of the

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Explain the reasons for u. s. neutrality during the 1920s and 1930s. how did ideas about neutrality change during the period from the end of world war i to the passage of the lend-lease act? be sure to include any events, terms, or people that may support your response.