What was the US foreign policy and outlook on Hitler when he began to conquer countries such as Poland? What im looking for is how the US reacted to Hitler in the early 30's when he became Chancellor and what they did when he began taking over countries, what was the relationship between the US and Hitler and how did the US react to Hitlers aggression. This is honestly a huge project for me and i would really appreciate some insight as well as any potential sources that i could use (specifically primary sources) Thank you so much for any help you can provide.
Basically, US foreign policy during this time was isolationist. It is true that President Franklin Roosevelt came to see Hitler as a threat to US security soon after WWII broke out in Europe, but most Americans did not.
During the 1930s, the predominant theme in American thinking on foreign policy was isolationism. This was the time of the passing of the Neutrality Acts specifically meant to keep the US out of European wars. Most Americans did not believe that Hitler's rise was any threat to the US and they wanted to stay out of the war even after Hitler took Poland.
After the start of the war, US foreign policy moved more towards helping the Allies but not enough to make most Americans accept the idea of going to war. For this period, you should look at things like the Destroyers for Bases deal and the Lend-Lease program.
The mtholyoke.edu link below has links to many primary sources, some of which are relevant to your question.
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