It shouldn’t be retroactive to those already that have been lawfully sentenced to a death penalty. You can’t make other laws retroactive legally, this shouldn’t either. Thse already sentenced lawfully should have their sentences carried out immediately.
Back in the ‘70s, the death penalty was struck down so those on death row got their sentences commuted to life. Thing is life is 45 years but then subtract good time and shorter time due to over crowding and all the other hooey and you have monsters being set free to roam the streets. It was a matter of hours and days before they were raping and murdering and states were scrambling to reinstate the death penalty. How soon we forget.