Welcome back to The Week in Weed, your Friday look at what’s happening in the world of legalized marijuana.

Massachusetts has promulgated final rules for cannabis regulation.  Look for TBT’s analysis of those new regulations shortly.  Until then, here’s some news coverage:

The Massachusetts Cannabis Control Commission has finalized the regulations for the state’s voter-approved recreational cannabis industry, four months before the program is set to go live, according to a WBUR report.

Massachusetts got closer Tuesday to making recreational marijuana sales in the state a reality this summer after the approval of final regulations for MJ companies.

Massachusetts just got a whole lot closer to welcoming its first-ever recreational marijuana shops, and it looks like they’ll be in business on schedule at the beginning of July.

Sanctuary status isn’t just for immigration anymore, as states consider providing protection from the federal government to cannabis purveyors.

Taking a cue from the fight over immigration, some states that have legalized marijuana are considering providing so-called sanctuary status for licensed pot businesses, hoping to protect the fledgling industry from a shift in federal enforcement policy.

California Governor Jerry Brown is pushing back against Jeff Sessions, telling reporters that the attorney general acts “more like Fox News than a law enforcement officer.”

And in case you thought supply and demand was the stuff of Econ 101, Pennsylvania’s early experience with medical marijuana shows it’s a bit more complicated than that.

Pennsylvania’s medical marijuana dispensary owners are experiencing a common occurrence among new markets: a supply shortage.

Due to high demand, Pennsylvania medical marijuana dispensaries are starting to run dry.