Why did Adolf Hitler hate Americans?

Stalin had little to do with America and Americans (at least that is recorded) until the Second World War. During WW2, Stalin became an ally of the Americans and therefore did NOT hate them at the time. They did have issues, specifically over comments made by the American President, Roosevelt.

After World War 2, they had issues with the beginning of the Cold War. But it was competitive, Stalin wanted to have better weapons. So if you would like to call that "hating" Americans, it was simply due to the fact that they wanted to be superior to America.

But America wanted the same on that note.