Portland police said Wednesday that Oregonians who travel to Washington to buy marijuana only to bring it back into the state are "not an issue" as long as they stick with what the law allows them to possess.

Starting July 1, anyone 21 and older may possess up to 1 ounce of marijuana away from home and up to eight ounces at home.

Oregonians shopping for cannabis in Washington are nothing new. May sales data released by the Washington Liquor Control Board showed that one Vancouver shop sold more marijuana than any other shop statewide -- thanks in part to Oregonians, who made up about 50 percent of sales.

Portland police said the issue isn't on their radar.

"We are not doing interdiction on people who are going there to buy their weed and bringing it back," said Sgt. Pete Simpson. "Our drugs and vice division has not and does not focus on low level drug transfers of any kind. They are working large scale operations, which is not what we are talking about."

While Portland police shrug at the prospect of Oregonians going on a shopping trip to Washington, the Oregon Liquor Control Commission strongly advises against it.

The agency is concerned about running afoul of a 2013 U.S. Department of Justice memo that spells out the federal government's law enforcement priorities on marijuana. Those priorities include preventing black market diversion.

But practically speaking, Simpson said Portland police aren't looking for motorists traveling with marijuana they bought in Vancouver. However, he did have a bit of advice for those thinking of making the trip.

"You don't need to fly a flag that says, 'This car is full of weed,'" he said. "That's not something we would suggest."

-- Noelle Crombie