Distances between cities in the Northeast are smaller than in the West, leading some to suggest Massachusetts’ move could motivate neighboring states to consider similar steps, given how easy it will be for people to cross state lines to acquire the drug.

“It certainly makes sense for those states to look at the policy and consider the benefits that a state gets from putting this behind a regulated counter,” Taylor West, deputy director of the Washington-based National Cannabis Industry Association, said in a phone interview.

Read more: http://uk.reuters.com/article/us-massachusetts-marijuana-idUKKBN144195