Originally Posted by Stiofan
There are some dry counties in states such as Mississippi where not only the purchase of alcohol is illegal, but the possession and transport as well...
That's a poor example. A number of States directly regulate interstate commercial activity involving alcoholic beverages though their regulation of the buying, selling and commercial transportation of such products; but such regulation by a State is expressly permitted under the 21st Amendment.
The best answer is that --
- The possession of something in a State by any person in that State for that person's own use is not "commerce" and has only an incidental effect on interstate commerce.
- As KyJim pointed out in post 27, there are many areas in which a State and the federal government may have overlapping authority.