They suggest that Obamacare is so dangerous that it's worth the risk. And they want to go on record as opposing it at all costs.
But, if that's truly what they believe, wouldn't they be better off letting Obamacare go into effect in January, on schedule? That way, if it truly is an abysmal failure, the public would have 10 months to learn that lesson just in time for the 2014 elections.
I suspect that what they really fear is that Obamacare will be a success - and that the public will have 10 months to learn that lesson just in time for the 2014 elections.