The US Congress is on the verge of voting to leave the UN and NATO, which means that our pres won’t be beholden to the internationally established laws against human rights violations. We must write them and beg them to declare trump a human rights violator and guilt of crimes against humanity (by the time they get around to doing anything, he will have likely ordered the conduct of torture.

You can write the ICJ:

International Court of Justice
Peace Palace
Carnegieplein 2
2517 KJ The Hague
The Netherlands