The Associated Press has reported that Attorney General Jeff Sessions will be rescinding a key policy that has allowed the legal marijuana industry to grow.

The Cole Memo is "a set of criteria the DOJ sent out in 2013 to states with legalized medical or recreational marijuana. The memo said as long as the states' met certain criteria, such as limited marijuana use by teens and impaired driving incidents, the DOJ would not intervene."

According to the AP’s sources, Sessions will be rescinding the memo, instead allowing federal prosecutors determine how aggressively they will enforce federal law on marijuana.

An official announcement is expected to be made later today.