Welcome to Higher Law, our new weekly briefing about all things cannabis. I’m Cheryl Miller, reporting for Law.com from Sacramento. Happy 4/20! There’s lots to celebrate this year. John Boehner has evolved into a pot pitchman. President Donald Trump may protect marijuana-legal states from Jeff Sessions. And Mitch McConnell wants to legalize hemp.

But before sparking up with a whole bunch of friends, California’s bureau of cannabis control would like to remind you: You just might need a permit for that.