Making gun ownership a major hassle and legal risk has worked wonders in blue states. I read recently that gun ownership in some states has dropped from around 40% to 10%, because keeping your guns legal is a major PITA, and if you make a mistake, you could be arrested.
I call BS on that stat. I surmise it has gone up, exception being a few deep blue states, but they are also the biggest hypocrites in the world as well.