Seriously, I think Bush should have smacked down Fannie Mae & Freddie Mac, so yes, he is somewhat culpable, but there are a pack of Democrats who deserve more blame. And some banksters, too.
for starters
Carter, CRA, Greenspan, Fannie Mae, Freddy Mac, Clinton, Cuomo, Bush, Paulson, Geithner,
to some degree, all played a role..