You can't "reduce the amount of shipping" by fiat. The best you can do is price the externalities into products we buy—which is a good idea and we should be doi

You can't "reduce the amount of shipping" by fiat. The best you can do is price the externalities into products we buy—which is a good idea and we should be doing a lot more of that—but that won't change the fact that (a) it'll always be cheaper to make some stuff elsewhere and (b) it's often impossible to make some stuff closer to you. Good luck making (not just assembling) smartphones in Belgium or Iowa. What you're really asking for is to make consumer goods so dramatically more expensive that repairs become economically competitive and casual disposal becomes economically untenable. Even then if you want to "fix" the problem, you would also fix the cost of housing, education and healthcare so that disposable consumer goods command greater portion of people's income.