If the Republican members of congress bear any blame, it's for not succeeding in their attempts to roll back this mess during Bush 43's administration. After the Dems regained control, that opportunity vanished. But at least they *did* try to fix it before the problem reached critical mass.
I'm sure the roll call on those votes would show the usual back-stabbers like McCain helping the Marxists.
Surprisingly both McCain and Bush tried to rein in Fannie and Freddie. McCain introduced legislation in 2005 but it was defeated.
Problem is...that would be like the Repubs saying now they would roll back Social Security.
Sure, it's something that should be done at some point but all kinds of charges would be leveled insuring that the Repubs would lose seats meaning the thing would NEVER be dealt with.
Easy with 20/20 to say they should have done it, but at the time it would have been committing political suicide and would have imperilled the War AND the economy way more than it was.