We wouldn't directly implant humans with foreign genes in experiments [...]
That, I believe is not true now, nor for many years... And in another decade, will be definitively untrue.
The legal arguments are being formed now to determine how to extend the rights of humans to things that are less than human. Human hybridism and human/mechanical interface are the two legs of transhumanism, quickly becoming commonplace.
Hold on... It's going to be a bumpy ride. What does one do with a genetically modified 'super soldier'? That question is soon to come. How does such a thing retire and become part of our social order? Does it have full rights as human? Can we allow it to breed? Do we have the right to tell it not to breed?
The hubris is astounding.