"Marijuana purchased in Colorado must stay in Colorado," Pabon warned.
"We could attract greater federal scrutiny and displeasure of our neighbors," if marijuana flows across state lines, he said.
(Rep. Dan Pabon is a Denver Democrat who sits on the Colorado marijuana task force.)
As Colorado's state lines are rather porous, I would hope that marijuana will flow across state lines. Someone had better do a pot price study to see how much Colorado's reforms depress the black market price of weed in SLC, Albuquerque, Amarillo, Cheyenne, etc.
It could be better than many other Regression Discontinuity empirical designs, as you have the WA reform also.