The Holder decision of the US Supreme Court exemplifies the tendency of criminalising humanitarian aid when fighting international terrorism. This articles shows the incompatibility of the judgment with regard to principles of international humanitarian law and humanitarian aid. The judgment has aroused passionate debates in the American academia, but was barely recognised on the other side of the Atlantic. The present article aims to fill up this gap. The provisions discussed here can be of interest for anyone engaged in the field of humanitarian aid world-wide, since their extraterritorial application is provided for.