Support for War Crimes Tribunal against Libya includes a key exemption:
the United States insisted on including a provision in the resolution to protect Americans from investigation or prosecution by the International Criminal Court, known as the ICC. It requires that any citizen of a country that hasn't joined the ICC be investigated or prosecuted in his home country - not by the ICC - for any alleged actions stemming from operations in Libya authorized by the Security Council.
Prosecutor Luis Moreno-Ocampo is required to deliver an initial report to the council in two months.