While that US law only says that USA should use "all means necessary and appropriate to bring about the release of any U.S. or allied personnel being detained or imprisoned by, on behalf of, or at the request of the International Criminal Court", in reality USA has always used any means necessary for protecting their military personnel from suffering consequences from breaking the local laws not only in the cases of crimes that fall under the jurisdiction of ICC, but also for any common crimes, e.g. by smuggling out of the respective foreign country military personnel guilty of killing people while driving drunk, in order to escape trial and sentence.