All it took was an ill-advised quip from Rush Limbaugh to turn the national debate about ObamaCare from concerns about religious freedom to one about an imaginary Republican war on women. But the nation’s Roman Catholic bishops are trying to refocus Americans on the threats to their religious liberty with a “Fortnight for Freedom” program planned for July in which they hope to get people discussing the ways in which the government is seeking to infringe on their rights to worship. Though predictably liberals are branding this as an effort to help Republicans, this is exactly the sort of project in which all faiths ought to participate.

The manifesto issued by the United States Conference of Catholic Bishops is an important document that is neither...