There are already a lot of products that are constrained in various ways from moving across state lines. Alcohol is the poster child, but it's a long list choc

There are already a lot of products that are constrained in various ways from moving across state lines. Alcohol is the poster child, but it's a long list chock full of mundane items. For example, you can't ship a shower head to California unless it has a 1.8GPM flow restrictor on it.