Why did the United States fight Germany during World War II instead of supporting Germany to weaken the Soviet Union?

In fact, this question is a question worth pondering - why did the United States not defect to Germany and Japan in World War II, but joined Britain and France? If the United States had joined the Axis powers, the situation in World War II would have changed dramatically, and it could even be argued that the fascist camp would have won World War II.

But why didn't the United States join Germany?

During World War II, the United States maintained a relatively neutral position until Pearl Harbor, with members of Congress supporting the Axis powers led by Germany and Japan, and members supporting the Allies led by the Soviet Union and Britain.

At that time, Germany had a high level of industrial development, excellent weapons and equipment, and won many wars, especially the blitzkrieg to the extreme, whether it was Poland, the Netherlands or France, it could not escape the German raids. The aggression of the Axis powers was protested and opposed by the people of the world, and the invaded countries rose up one after another to defend their homeland.

The war was once in a stalemate. At the end of 1941, when the Japanese raided Pearl Harbor, the United States was shaken to the point that it could not stay out of the world war, and after being attacked by Japan, the United States subsequently declared war on Japan.

At this time, the United States was equivalent to being in the camp of the Allies. In fact, there are many reasons for the United States to attack Germany, not just to declare war on Japan and join the Allied camp.

First: The United States has always advocated a policy of parity in Europe, but Germany's ambitions are getting bigger and bigger, beating Europe to pieces, and the momentum of annexation is constantly extending, so that the influence of the United States in Europe will gradually disappear and be gradually replaced by Germany, not only that, Germany's strength and ambition will also threaten the United States.

Second, the Soviet Union and Germany were at a disadvantage in the confrontation, and the losses were enormous, the allies' forces were greatly weakened, causing the United States to be uneasy about the repeated victories of Germany on the one side of the war; secondly, the Axis's Japanese policy of going south invaded the interests of the United States, and the United States attacked Japan, and it was also natural that the United States would stand against Germany, that is, it was natural for the United States to support the Soviet Union in attacking Germany.

Three: The Allies at that time were the inferior side in the war, and the righteous side, the defensive battle against fascism. The United States will choose to support its allies, both in its own interests and in international morality. Germany is strong, does not need the support of the United States, the soviet union is in need of american assistance, the United States to help the Soviet Union to resist Germany can not only reflect its own value, get international support, but also to defeat Germany's ambitions, defend its own interests, eliminate future threats.