If you report him to ICE as selling copy-written material they will investigate him. I've had to go through them before when a company shafted me on some jersey's and they went after them. They were based in china so they do not just go after people in the US. Include his youtube channels, websites, and social media and they will confiscate them all. I can certainly understand him being upset if someone filed the strike on his channel but to threaten someone to the level he has is childish and cowardly behind his keyboard.