It seems to me that no one has started a war that directly involved the US since about 1939.

I still find the idea of people engineered to fight wars troubling. One wouldn't be able to wait until a war started to engineer warriors. They would have to be created first and that makes war all the more likely. Would you like an entire class of people engineered specifically to be better warriors sitting around with nothing to do? I think our founders were concerned about a standing army of unengineered people. We're treading dangerous waters when we start creating a warrior class, something that is already underway in this country.

The problem with the poster immediately before you is that while he may like to be engineered to sleep only 2 hours a night, such engineering would likely have to happen before birth. Is it moral to engineer a person without their consent? If there is a class of people who can work 10 hours a day, what happens to those who can't?

One need only look back to an old Twilight Zone to some of the issues that can arise in this brave new world of engineering. <link>