>Please note that the court will NOT act retroactively - only on war crimes commited after the court is approved.

So why the US are against it?

The only thing that comes to my mind is that I have to agree with what Len Speed posted in his message #764743: "So the US wants to be the world's policeman, fighting to uphold international laws, but not having the inconvenience of being hampered by being bound by those laws.".