"For most contemporary Americans, contentious questions about birth control are considered a peculiar “Catholic” problem. With the use of contraceptives at some point being nearly universal among fertile adults (and quite common among teenagers, as well) and with birth control enjoying the blessing of state and federal governments as the alternative to both “unwanted” births and abortion, only a minority of especially devout Catholics seem to be left to puzzle occasionally over the issue. Even their interest is commonly understood to be a consequence of medieval thinking codified in Pope Paul VI’s reactionary 1968 Encyclical, Humanae vitae. Mostly forgotten is the fact that, as recently as one hundred years ago, it was American Evangelical Protestants who waged the most aggressive and effective campaigns against the practice of birth control within the United States; Roman Catholics quietly applauded on the sidelines It was evangelicals who-starting in 1873-successfully built a web of federal and state laws that equated contraception with abortion, suppressed the spread of birth control information and devices, and even criminalized the use of contraceptives. And it was Evangelicals who attempted to jail early twentieth-century birth control crusaders such as Margaret Sanger. All the same, by 1973-the year the U.S. Supreme Court overturned the abortion laws of all fifty states-American Evangelical leaders had not only given a blessing to birth control; many would also welcome the court’s decision in ‘’Roe v Wade’’ as a blow for religious liberty. This book traces the transformation of American Evangelical leadership from fervent foes to quiet friends of the birth control cause. It examines, in particular, the shift in motives for this change over time: from a sweeping culture war against all forms of vice; to a desperate effort to salvage dreams of Protestant world empire; to swelling anti-Catholicism; to fear of “population explosion,” and surrender to a newly dominant culture."