To understand the crisis in Washington, tune out the histrionics and look at the big picture: Republicans are threatening to shut down the federal government — and perhaps even refuse to let the Treasury pay its creditors — in a desperate, last-ditch attempt to keep millions of Americans from getting health insurance. Seriously. That’s what all the yelling and screaming is about. As my grandmother used to say, it’s hard to know whether to laugh or cry. Eugene Robinson Writes about politics and culture in twice-a-week columns and on the PostPartisan blog. Archive Follow on TwitterFacebookRSSGallery Tom Toles on health...