You must be new to how the country with the world reserve currency and the largest military industrial complex the world has ever known operates. They follow the golden rule. The one with the gold makes the rules (especially when they have aircraft carriers to back them up).

It's all quite ridiculous. This explains why the trade war with China is so intense. It's like putting a gun to your trading partners head and saying, "We're going to debase our currency, but we don't want to trade differently with us because of it."