You can fire guns aimlessly into the air, Yosemite Sam, the treaty would genuinely only effect the gun trade, not sale. And Mr. Morris is flat out wrong, no treaty carries the weight of an amendment. US support for the treaty is largely based on the fact that countries are selling guns in bulk to military regimes (who are using them to kill and control their citizenry) in the Middle East with no sanctions (namely russia and iran sending buttloads of weapons into Syria at bargain prices)