; or (B) an individual with an advanced degree in pediatric medicine on the faculty of an institution of higher education in the United States. (10) Migration deterrence program The term migration deterrence program means an action relating to the repatriation or referral for prosecution of 1 or more individuals apprehended by the Secretary or a cooperating entity for a suspected or confirmed violation of the Immigration and Nationality Act ( 8 U.S.C. 1101 et seq.). (11) Secretary The term Secretary means the Secretary of Homeland Security. (12) Unaccompanied alien child The term unaccompanied alien child has the meaning given the term in section 462(g) of the Homeland Security Act of 2002 ( 6 U.S.C. 279(g) ). 3. Child welfare at the border (a) Guidelines The Secretary, in consultation with the Secretary of Health and Human Services, experts in child development, experts in child welfare, experts in pediatric medicine, and the American Bar Association Center on Children and the Law, shall develop guidelines for the treatment of children in the custody of U.S. Customs and Border Protection (CBP) by all personnel who come into contact with such children in the relevant legal authorities, policies, practices, and procedures pertaining to this vulnerable population. (b) Mandatory training The Secretary, in consultation with the Secretary of Health and Human Services, shall— (1) require all U.S. Customs and Border Protection personnel, and cooperating entity personnel, who have contact with a child at a port of entry or Border Patrol station to undergo appropriate training, which shall include live training, on the applicable legal authorities, policies, practices and procedures relating to children