How did the Neutrality Acts affect World War 2?

Truthfully the American neutrality placated the American people who did not want to be in another foreign war. However, while being neutral Roosevelt created the Lend Lease Act to assist Britain and others with munitions, ships and planes. America also sent food and other needed items to England. Roosevelt wanted to fight against the monster Hitler, but the Americans did not fully understand the devastation of Hitler's oppression and the genocide of the Jews as President and Mrs. Roosevelt and other cabinet members did.