Planned Parenthood has been and is under congressional and criminal investigation (by attorneys general, local prosecutors and various regulatory agencies in Arizona, Indiana, Alabama, Kansas and Texas) for allegations including failure to report criminal child sex abuse, misuse of health-care and family-planning funds, and failure to comply with parental-involvement laws regarding abortions.

WSJ: Robert George and Carter Snead: Planned Parenthood's Hostages

The researchers suggested this failure to transfer may be down to a lack of parental involvement or the "light touch" nature of the interventions.

BBC: Behaviour classes 'lack impact'