Oddly, I think it is appropriate for the U.S.A. to have withdrawn from their ratified, signatory position with the Treaty of Rome, which followed the earlier Hague International Peace Conferences of 1899 and 1907. (they didn't work so well) The U.S. withdrew on 6 May 2002. Probably wise, but uncomfortable for future historians.
The U.S. unsigned the “
Rome Statute”. The “Treaty of Rome” is something different.