faith-based pregnancy resource centers" whose materials are "consistent with Biblical principles". The National Institute of Family and Life Advocates (NIFLA), which works with CPCs on legal issues, "strongly believes that sharing the Gospel is an essential part of counseling women in pregnancy help medical clinics". Some CPCs are run by the Catholic Church or by other church groups. Unaffiliated CPCs, or CPCs affiliated with other organizations, may provide a religious perspective in their counseling. In contrast to the overt Christian perspective of most CPC networks, Birthright International has a stated philosophy of non-evangelism. A Jewish CPC organization, called In Shifra's Arms, also exists. Many CPCs require their staff to be Christian. For example, as a condition of affiliation, Care Net and the Canadian Association of Pregnancy Support Services, the two largest CPC organizations in the United States and Canada respectively, require each employee and volunteer of a prospective affiliate to comply with a statement of faith. CPCs unaffiliated with either of these may also require staff to be Christian. Religious activity is sometimes part of a CPC customer's experience. Care Net, which "is committed to presenting the gospel of our Lord to women with crisis pregnancies", claims to have effected over 23,000 conversions or restatements of Christian faith. NIFLA "strongly believes that sharing the Gospel is an essential part of counseling women in pregnancy help medical clinics". Some visitors to CPCs report that employees subjected them to unwanted evangelizing. CPCs outside the United States are also frequently Christian. CareConfidential, the largest umbrella network for CPCs in the United Kingdom, runs "Christian-based pregnancy crisis centres" and is a division of the Christian charity CARE. The Canadian Association of Pregnancy Support Services, a similar network in Canada whose centers may also affiliate with Care Net or Heartbeat International, describes itself as a "Christian charity"; its affiliates "adhere firmly to Christianity". The United States-based Human Life International runs "Catholic pregnancy centers" in Mexico and also provides aid to the Centros de Ayuda para la Mujer, a network of CPCs in Latin America whose philosophy is "in conformity with the Magisterium of the Roman Catholic and Apostolic Church." As in the United States, unaffiliated CPCs may also be run by church groups or are otherwise Christian. Affiliation with the anti-abortion movement Most crisis pregnancy centers are affiliated with several major anti-abortion organizations in the United States; these are Care Net, Heartbeat International, Birthright International,