The United States has sanctioned ICC President Tomoko Akane and a senior official in the latest in a series of confrontations with the The Hague-based tribunal.
The move targets the leaders of an institution which the Trump administration has accused of threatening American interests by prosecuting allies and U.S. personnel.
The sanctions are the latest development in the U.S. campaign against the ICC and its judges, which has already seen several key officials lose their diplomatic immunity and be expelled from the United States.
The International Criminal Court (ICC) has always maintained that it was within its rights to investigate and prosecute war crimes and atrocities within states which have accepted its jurisdiction.
The latest confrontation in the long-running stand-off between the U.S. and the ICC is set to reignite debate in Washington over the legitimacy of international courts.