The war on drugs is not economically sound because it costs so much many in order to operate it. The issue though is the fact that economically sound or not the war on drugs is stilll needed. It should be revamped though to find a way to cost less money.
The first problem with this is that we are not even winning the war on drugs. Also the amount of money that we spend trying to keep them from coming in is not worth the amount of problems that we run into. We would be better to go to war with the cartel and such and bomb the sources.