Regarding Charles Lindbergh's 1941 Radio Address; what historical precedents did Lindbergh cite to support his position?

Consistent with his approach to stay out of the war,
Lindbergh took a couple of historical tracts to defend his point of view.  The first was
pragmatic in that he argued that American forces could not beat the Germans.  His
analysis was rooted in the visits he had made to Germany and the experiences he had
while being a political guest of the Nazi government.  Lindbergh was considerably
impressed with the German air force and what he believed to be "German work ethic."  He
felt that the landlocked nature of Germany made it impossible for the Americans to
launch an amphibious attack.  Another precedent Lindbergh cited did smack of Anti-
Semitism.  In late summer of 1941, Lindbergh argued the following:  "Their greatest
danger lies in [the Jews’] large ownership and influence in our motion pictures, our
press, our radio, and our Government. We cannot blame them for looking out for what they
believe to be their interests, but we also must look out for ours."  This was one of
those statements that revealed a presence, valid or not, of anti- Semitic tendencies
that many of the isolationist movements possessed of the time period.  A few years
earlier, Lindbergh wrote in a diary entry:  "a few Jews add strength and character to
our country, but too many create chaos. And we are getting too many. This present
immigration will have a reaction”  This type of sentiment emerged in his radio address
in 1941, a few months before Pearl Harbor, making most of what Lindbergh said a moot
point.