The thing which Charles Lindbergh was advocating in his speech is:
Based on the given speech, we can see that there is the argument made by the speaker in no uncertain terms about the need for the United States to remain neutral and not be drawn into a war which had nothing to do with them.
Furthermore, he believed that the British should not have declared war on Germany if they were not capable of fighting and winning the war without the inclusion of America.
He cited the rising unemployment, the economy, poverty rates which were all internal problems of America and they did not need to be persuaded or cajoled to join the war of Britain.
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