Is interstate trade actually legal?

Pablo Garcia Saldana https://unsplash.com/@garciasaldana_?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText

In 2013, the U.S. Justice Department document known as the Cole Memo essentially OK'd the state legal cannabis industry on the condition that it adhered to eight guidelines. One of those guidelines is "Preventing the diversion of marijuana from states where it is legal under state law in some form to other states."

The industry has generally interpreted this to mean that the federal government would not tolerate interstate cannabis commerce in any form. Now, more than three years after then-U.S . . .