Good question, Sonny. The simple answer is the medical lobby, which pumps millions into Washington won't allow it.
If there was a real free(capitalist)system, the Govt. wouldn't care less how much you paid for Doctor prescribed drugs.
The way it is now, is because of the powerful medical lobby making you pay thru the nose.
Regards
I see your point, my big question is, shouldn't NAFTA supercede all this, and allow it?