Closing prisons is generally good, but even in the most glorious future, there are going to need to be places where people who choose to violate societies rules are kept away from society, i.e. a prison. If we don’t want to segregate these prisons by gender that’s a discussion worth having, but right now we do, so since I believe in feminism, I also know that a woman is just as capable of needing to be removed from society as a man.
This is of course a separate discussion from the conditions and expectations of our current prisons.
Bush 1 administration, Clinton, Bush 2, Obama. It would be around 500-1000 people but of course the entire US Military would fight against it and end the world if it came to it. If a sympathetic US President decided to assist though, a new golden age would dawn.