… the United States’ domestic war crimes law, the War Crimes Act of 1996 (as amended), has never been fully aligned with the nation’s obligations pursuant to the four Geneva Conventions of 1949 to enact domestic legislation establishing jurisdiction over any individual suspected of committing a grave breach of these universally adopted humanitarian law treaties.
Also, hostis humani generis means an enemy of all mankind.
Anyway, read the whole article for the interesting and detailed details, such as
Congress deprived federal prosecutors of the authority to prosecute suspected war criminals discovered in the United States so long as they and their victims were aliens when their crimes were committed.
That, Dear Friends, is a loophole through which one could drive a oligarch’s yatch.