In June 2007, the federal Administration for Children and Families (ACF) released a report on the content and effectiveness of nine comprehensive sex education curricula it deemed "some of the most common . . . currently in use." The report was issued in response to a 2005 request from two prominent opponents of comprehensive sex education and supporters of abstinence-only education, Sen. Tom Coburn (R-OK) and former Sen. Rick Santorum (R-PA).  The ACF contracted with the conservative Sagamore Insitute for Policy Research to conduct the review, and sought additional comments exclusively from the Medical Institute for Sexual Health, which opposes comprehensive sex education and supports abstinence-only programming.