President Obama’s credibility has taken a significant hit since it became clear to the public that his signature promise—that “if you like your plan, you can keep your plan”—turned out to be dishonest. Polls now suggest a realistic chance that Republicans can retake the Senate in the 2014 mid-term elections. But the irony is that the GOP, having implicitly committed itself to protecting Americans’ existing insurance arrangements, has backed itself into a corner. What happens in 2017 when tens of millions of Americans will be on Obamacare-sponsored insurance plans? Republicans have pledged to repeal the law, even if many of those Americans come to like their new health plans.