He also got it for being half black since by the cutoff date he'd been president for all of 11 days. Had they waited a year they would have had the pleasure of finding out he ordered 50% more drone strikes than Bush did.
We're well into flame war territory here, so I apologize, and am treading carefully.
The list of war crimes I can pin on US during that time is mostly indefinite imprisonment in Guantanamo if you allow for the efforts Obama made to reduce torture.