So between Medicaid and the private exchanges, that makes 6.5 million previously uninsured Americans who have now gained coverage. …

But even as recently as February — when analysts knew how many states weren’t going along with the Medicaid expansion and were aware of the early technical glitches facing the rollout of Obamacare — the CBO still projected that the law would reduce the number of uninsured by 13 million.

Even adding the 3 million young adults under 26 who were added to their parents’ insurance policies, the resulting 9.5 million total would still be significantly below expectations.