was prohibited in most of the US for a long time, and the Illegal Business Act of 1970 only enforced this. https://hdlime.net/%EB%9D%BC%EC%9D%B4%EB%B8%8C-%EB%B2%A0%ED%8C%85-%ED%86%A0%ED%86%A0%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%8A%A4%ED%8F%AC%EC%B8%A0-%EB%B0%B0%ED%8C%85%EC%9D%98-%EC%83%88%EB%A1%9C%EC%9A%B4-%EB%AF%B8%EB%9E%98/
