At the point you're at with all your skills, have you thought of starting your own company? No employer will know how to use your talents as well as you do.
The difference is that the US has a culture where such actions are unacceptable, and there are checks and balances to stop the government from forcing people to fight overseas. Without these, it's certainly possible a US dictator could put illegal immigrants (or anyone) on a plane and send them to fight and die in Ukraine.