Earlier quoted context omitted.
> No way a common jury finds him guilty I wish I could still have your faith in my fellow countrymen. Sadly I believe yours won't survive this trial.
Assuming he gets to trial, and has lawyers that understand how to use the media, I think it may be difficult to convince the entire jury to prosecute. Rehashing US war crimes, which would certainly come up, won't be great for the prosecution either.
The judge will set firm boundaries for what the jury can and cannot consider in their deliberations and while the jury is actually free to use any criteria they want, it will be very heavily implied that they cannot. The court will do everything in their power to make the jury believe they must convict based on the evidence presented and the rule of law.
Similarly the court will put significant limitations on what can and cannot be presented as evidence. US's commission of war crimes is (arguably) irrelevant as regards the crime in question, so I won't be surprised to see that bringing it up will not be permitted.
This is all fairly standard US court stuff.