Of course the US has acknowledged the ICC. In 2002 on the heels of 9/11 George W Bush signed https://en.m.wikipedia.org/wiki/American_Service-Members%27_Protec

Of course the US has acknowledged the ICC. In 2002 on the heels of 9/11 George W Bush signed https://en.m.wikipedia.org/wiki/American_Service-Members%27_Protection_Act https://en.m.wikipedia.org/wiki/American_Service-Members%27_... into law, also known as Hague Invasion Act, specifically acknowledging the ICC in the clearest of ways.