Going after Bush/Cheney will not help. One bit.
It will cause many independents alreeady wary of Nobama to question his priorties. (Notice how they frame it - Obama is against it). Not to mention, Bush is looking better and better every day.
Bingo! It's all to help stop Obama's slide.
If they do it, it will backfire.
They keep bringing up Bush, people are going to start thinking, “I wasn’t nearly as afraid in general as I am now. Afraid of the economy, afraid of terrorism, afraid of nukes being lobbed at us by North Korea...”
This will backfire. They can say all day that this is “Bush’s fault”, but the country only had a few weeks literally to feel the panic of bank failures under Bush, but as time goes on Obama will be the one in their mind as their fears and jobless pain continues.