The final deal to avert a breach of the debt limit and end the government shutdown included what has been described as a “small concession” to Republicans: tightening the income verification measures for customers on the Obamacare insurance exchanges to qualify for subsidies. But considering the hurdles associated with this step – and the enormous IT problems we’ve already seen with the exchanges – the concession may not be small at all. As one prominent health care expert tells Salon, the impact could contribute to an attempted sabotage of the law by those who want to see it repealed. Rather...