Why are the Republicans totally ignoring all the bad mistakes they've made and own up to their failures?

And stop blaming Obama for their failures over the past.Nobody in that group takes responsibility for all the wrong doing during the Bush Administration.That's unacceptable.That's why their own people are against them now...And they are still trying to cover up their bad policies and push them off on the underdogs of the World.They think the whole country is buying their lies...