The culture wars are over, right? Perhaps some helpful soul could inform the Catholic bishop of Pittsburgh, who last week calmly explained that “the Obama administration has just told the Catholics of the United States, ‘To hell with you!’” A quiet word in the ear of the dogged opponent of gay marriage Maggie Gallagher might have helped too. Just after Proposition 8, which banned gay marriage in California, was struck down by a court on narrow grounds, she titled a blog post: “Ninth Circuit to 7 Million California Voters: You Are Irrational Bigots.”

Not to be outdone, newly insurgent presidential candidate Rick Santorum described a secular society not based on religious principles as a renewal of the French Revolution and “the guillotine.” Evangelical voters lined up in Minnesota, Missouri, and Colorado to vault him back into the front of the race. And when the Susan G. Komen for the Cure foundation withdrew support from Planned Parenthood, the reaction from the other side was almost as ferocious. “You don’t make good on a ‘promise’ to your dead sister by selling out women who need you most,” wrote Mary Elizabeth Williams on Salon. When Komen reversed its decision, the pro-life Republican who had been behind it, Karen Handel, resigned, complaining to Fox News about “the level of vicious attacks and coercion ... by Planned Parenthood. It’s simply outrageous.”

Who knew the sexual and religious politics of the 1990s were suddenly back, under the president who promised he’d try to end them? And who knew the president himself—who has made an elegant art form out of avoiding exactly these kinds of controversies in his first three years—would have made the final call on the one that suddenly united the entire Republican right in roiling rage? That decision was the now-infamous one to propose a new rule to mandate coverage of contraception, sterilization, and morning-after pills in all health-insurance plans, exempting purely reli...