It's a simple statement of fact that the United States has no jurisdictional authority over the actions Chinese citizens take in China against American citizens and vice versa. This is a serious problem for reasons such as this, but you cannot refute it as a basic statement of reality.

Put simply, American courts have no authority over Chinese in China, Chinese courts have no authority over Americans in the US, and our courts do not cooperate reciprocally as they do in other countries with alternative diplomatic and legal relations.