To the right’s dismay, scare tactics — remember death panels? — and spurious legal challenges failed to protect the nation from the scourge of guaranteed health coverage. Still, Obamacare’s opponents insisted that it would implode in a “death spiral” of low enrollment and rising costs.

But the law’s first two years of full implementation went remarkably well. The number of uninsured Americans dropped sharply, roughly in line with projections, while costs came in well below expectations. Opponents of reform could have reconsidered their position — but that hardly ever happens in modern politics. Instead, they doubled down on their forecasts of doom, and hyped every hint of bad news.

I mention all of this to give you some perspective on recent developments that mark a break in the string of positive surprises. Yes, Obamacare has hit a few rough patches lately. But they’re much less significant than a lot of the reporting, let alone the right-wing reaction, would have you believe. Health reform is still a huge success story.

Obamacare seeks to cover the uninsured through two channels. Lower-income Americans are covered via a federally-funded expansion of Medicaid, which was supposed to be nationwide but has been rejected in many Republican-controlled states. Everyone else has access to policies sold by private insurers who cannot discriminate based on medical history; these policies are supposed to be made affordable by subsidies that depend on your income.