Conspiracy to assist the unethical law enforcement operations of another country is not, in fact, a crime in the US. I wish it were. But to be guilty of a crime, it has to be a crime when you commit it. It doesn't work retroactively --- that's one of the first safeguards against despotism the founders came up with.
Couching it in "unethical law enforcement operations" doesn't really change the fact of the matter, does it?
It is far from clear-cut that when US corporations assist regimes where the US officially has serious problems with their human rights record, that laws against torture and other human rights violations would not apply to those enabling and assisting those violations. Some law enforcement operations are not merely unethical, or "different" from those that are legal here.
Are you arguing that we should pass another act, like the FCPA, that criminalizes the knowing and deliberate sale of technologies that will be used to harm people in violation of the UDHR? I'm right there with you.