first of all you have to wait until the appeals are trough thats noraml but then alot of states in the us have the killings on hold for decades and then kill a bunch most often when some republicans are back in power. also the MAIN reason is that they are just missing the poison to kill people ... thats also why killing people in the usa is the most inhuman killing in the world, the people get injected by poison but its only created in europe and europe bans all delivieres to the usa as they not support killing of citizens with it. and thats why the usa uses a bunch of other stuff not rly working there was a case a few years ago where the person was struggeling with death screaming for 20+ minutes ... so humane ... so nice