Given the sorry state economy is those days, this could help somewhat. Though knowing the public opinion, they'd cry "Gulags!" the second such idea is proposed...
And they'd be wrong why, exactly? Given the economic realities of the US, using prisoners as slave labor would undercut the low income sector, making the people in that sector even more vulnerable to the temptations of crime than they are already.
Nowhere, just in the part it's somehow a bad idea. The Gulags were not a bad idea in principle, it's just that Soviet had no qualms of putting a whole lot innocent people in there, and that left a pretty big stigma on a pretty viable idea. Also note that not all prisoners would be used as slave labor, just the ones sentenced to life without a chance of parole. It should be an option for others, too, but as a separate kind of sentence ("hard labor" as opposed to "prison").
Or it might be an indication that the death penalty isn't seen as a particularly hard form of punishment.
Except that states that practice death penalty still have the full scope of other penalties available. If it's like you say, it should result in a lack of decrease at most, not increase, unless chances of getting sentenced to death are very high (not a good thing).
Texans and Scots don't seem to mind it, while for example Germans seem utterly terrified by it (at least going by some of the laws I heard of...).
Wait, hang on, since when are the scottish in favour of the death penalty? I thought they wanted to stay in the EU....
Also, us germans? We're not particularly terrified of violence. We're terrified of the consequences of giving the state the right to impose lethal penalties on its citizens.
Well, it seems to me that Germany (or at least those that make it's laws) are averse to everything drastic in general, and to violence in particular. Gun laws even stricter than the rest of the EU, heavily restricted depictions of violence in media (especially video games), stuff like this. Germany shields even adult citizens from perfectly viable, if drastic material. Also, note that at this point, I wasn't talking about death penalty, but about cultural look on violence in broader scope. Perhaps it wasn't a good idea to bring that up, it's a bit outside of the scope of this thread.
My point was that cultures more inclined to violence are also more inclined to support death penalty. I then gave examples of how different the outlook on violence can be across the world, but now that I look at it, it was related a bit too tangentially. There are other factors that influence popularity of death penalty in particular, and in cases such as Scotland, they're probably prevailing. I don't know what Scots would say if actually presented in this proposal, but my guess is that they would be, on average, less against it than, say, the British (this is just theorizing, though. I haven't gone and asked every single one of them).
There's no way around this: You're talking out of your ****ing ass.
Was this jump to conclusion too far? OK, perhaps I should elaborate. My point is, the relation between death penalty support and violent crimes is not a casual one in either direction, but rather one of a single, common cause, rooted in culture. In other words, such people have harsher criminals, and also harsher punishments for crimes. As such, removing the harsher punishment would do nothing to remove the harsher criminals, quite the contrary, it might take pressure off them. My conclusion follows from this.