No not at all, but the Constitution also doesn't state your goal of putting a gun up to the head of Wal-Mart shoppers, who are looking for a the best bang for their buck.
I do believe that somewhere it mentions what the federal government can and not not do. And if I am not mistaken the federal government can put a gun to your head and pull the trigger, after due process of course. I also pretty sure that the federal government is allowed to regulate commerce and impose tariffs.