President Trump called Colorado Sen. Cory Gardner this week to tell him there will be no crackdown on states that legalized marijuana for recreational use.
Trump also said he will support legislation to allow state autonomy under federal law, which currently makes pot possession for any reason outside limited research a crime.
Gardner, a Republican, won the assurances by blocking Justice Department nominations after Attorney General Jeff Sessions withdrew the so-called Cole Memo in January.
That 2013 memo allowed state-regulated recreational pot markets to open by identifying specific trip wires for a federal crackdown.
Sessions, a longtime marijuana legalization opponent, empowered individual U.S. attorneys to decide whether to prosecute marijuana crimes, putting the fate of a multibillion-dollar state-legal industry in question.
Gardner is releasing his holds on Justice Department nominations in response to the president’s call.
“Late Wednesday, I received a commitment from the President that the Department of Justice’s rescission of the Cole memo will not impact Colorado’s legal marijuana industry,” Gardner said in a statement.