A ruling in the US Supreme Court involved 3D printing.
regulations
International Plastics Conference: How a Global Treaty Could Impact 3D Printing
There may be significant changes in the way polymers are made and used in future 3D printing systems.
Could Desktop Resin 3D Printing be Affected by Regulations in the Future?
There could be a massive problem for desktop resin 3D Printing in the future.
US Government Changes Rules For 3D Printed Weapons
Legal changes suggest the market for 3D printed weapons may soon shrink in the United States.