In
Defibaugh v. Big Brothers/ Big Sisters of Northeast Ohio Board of Trustees, (ND OH, Oct. 16, 2017), an Ohio federal district court dismissed a suit by parents of a minor child who contend that the mentor assigned by a juvenile court to their minor son coerced him into being baptized against the wishes of his parents. They also claim that their son's guardian
ad litem preached to the family about Christianity. The court held that the various defendants were not state actors or had judicial immunity.
Friendly Atheist blog has more on the case.