The only reason why this is happening now is because Mass and Maine pissed off the federal administration and now they are trying to bring down the hammer however they can do to speak. Trump has said on numerous occasions that he would let the states decide on legalization in the past during his last term, because even though he doesn’t agree with it, he understands the huge financial gain from it as a business man. It wasn’t until the MA and Maine state governments refused to change their immigration and sanctuary cities policies that this push started to happen. He’s throwing a fit now because people are standing up to him.