Oh, boy. It turns out that the WaPo featured on its front page a report by Charles Blahous of the (yes, Koch-funded) Mercatus Center — although the Post describes him as a Medicare trustee, giving the impression that this is somehow an official document — claiming that the Affordable Care Act will actually increase the deficit. Jonathan Chait does the honors:
You may wonder what methods Blahous used to obtain a more accurate measure of the bill’s cost. The answer is that he relies on a simple conceptual trick. Medicare Part A has a trust fund. By law, the trust fund can’t spend more than it takes in. So Blahous assumes that, when the trust fund reaches its expiration, it would automatically cut benefits.