German Invasion of America - Turning Point Fall of Liberty

"It was claimed that Germany intended to invade the Western Hemisphere, even intelligent Americans believed these assertions. It would therefore be useful if the Fuhrer expressed an opinion with regard to this.

The Fuhrer replied that he had no reason to discuss the military aspects of this question because it was not only childish but also absolutely absurd. The warmongers in America were also entirely aware of the impossibility of a German invasion. They made these assertions contrary to their better knowledge on the assumption that in this way they could involve America more easily in the war. One could not seriously discuss the assertions about a German invasion. If someone stated that Europe wanted to take possession of America, this was on the same level with the assertion that America wanted to conquer the moon.

Even though Cudahy admitted that one could dispose of the assertions concerning a German invasion as something fantastic and ridiculous, he nevertheless had to point out that large portions of the American public believed such statements. Perhaps the OKW had at some time concerned itself with this problem from the technical military angle?

The Fuhrer replied that the OKW did not concern itself with expeditions to the moon."

- Conversation between the Fuhrer and John Cudahy on May 23 1941.

https://archive.org/details/DocumentsOnGermanForeignPolicy-SeriesD-VolumeXii-February1-June/page/n935/mode/2up