While I appreciate your concern, I don't think the US postal service is going to open up every small yellow package coming out of China into America. It's the same anywhere really. I can import something illegal in my country (a balisong knife, for example) from China and if the package is compact enough and it doesn't say "WARNING! TOTALLY ILLEGAL STUFF IN HERE! PLEASE OPEN ME!" it has a really good chance of arriving at my doorstep.