There really isn't anyone able and willing to do anything about it. Beyond the ability to create some sort of meaningful sanction against the US, how many countries are truly willing to potentially sacrifice their own economic well-being to essentially 'make a point'.
And that's the big problem. Since the US gives no nod to international law, why should anyone else? The Rule of Law has collapsed entirely on the international stage. It's all 'dealmaking' now. Nobody really seems to give a rat's ass about Justice and Law.
Basically, we're right back in the 19th century, but with much more destructive weapons, and a lot more active nations involved.
The US -- as a people, not just George W Bush -- have forgotten WHY we helped create something like the UN in the first place. We have entirely betrayed the statements we made at Nuremburg.
Speaking of Nuremberg, here's what one of the former prosecutors had to say about the US rejection of the ICC.
With the ICC now a fact, the Assembly of States that will govern the ICC began to implement the organization and also the selection of the 18 individuals who will act as judges for the ICC proceedings. These judges were sworn in on March 11, 2003, at a proceeding that I attended as a guest of the government of the Netherlands. The ceremony was held at The Hague where the Court is to be located. By the time of this ceremony, 89 nations were parties to the Rome Statute and all were represented at the swearing in ceremony.No American government representatives attended the ceremony. I was one of two former Nuremberg prosecutors who were there. All that day – March 11 – I thought of Robert Jackson and how pleased he would have been that law-abiding states in this world of the 21st century had transformed his dream of a permanent court enforcing the Nuremberg principles into reality. Moreover, among those leading the way was Germany, which was the situs of his precedent-breaking prosecution against the top Nazis who were criminals. It is a matter of supreme irony that the path-breaking dream of an American for a world ruled by law based on justice is being translated into permanent reality by non-Americans.
http://www.roberthjackson.org/Nurembergandtheinternationalcourt.asp