Comment by rwmj

Depending on where you live, your country may or may not have decided to give legal force to ICC rulings by joining the Rome Statute treaty (https://en.wikipedia.org/wiki/Rome_Statute). If you live in a democracy, this was decided by democratic means, and can be changed the same way. This is not a unique situation, there will be many, many other treaties that your country has decided to sign up to.