it just says it's not a priority. >> reporter: professor calkins if we were to go to washington statend i and there is to fairly large municipalities on the border of idaho and spokane and what happens when you step over a border and what is in washington does it become illegal when you take the step and do you worry about the money that changes hands in order for someone to posses marijuana? >> well, the law changes as soon as you go across the border. what doesn't change is dramatically would be price or supply. it will be a real challenge to try to prevent the market conditions that exist in washington state or colorado from affecting market condescriptions elsewhere. particularly because even before passage, washington was a big exporter of marijuana. it produced purely black market marijuana for export to other states and that continues. it will be possible perhapses that the i 502 stores are not exporting but the existing black market was already serving the rest of the country and the rest of the country still is a black market. so, yeah, it's very hard to draw walls or put wal