The highest court in the US is the supreme court and every court any of us can be subjected to is under it. The ICC has no sovereignty over the US. Our foreign policy with regards to international law is to support it having sovereignty over others but not ourselves, the world peace enjoyed for the past eight decades or so is a direct result of American hegemony and if you don’t like it start building a military to rival ours.
There is a power imbalance on purpose which results in a little injustice and a big lack of armed conflict.