According to newspaper reports the JHU leaders have staged a demonstration against an Evangelical Church and there has been an attack on it with considerable damage. The JHU blame the pastor for the deaths of two women who had participated in a prayer service in the hope of a cure for their serious ailments.

The pastor has said that the women died in hospital to which they had gone or been taken. He has also said that the two women were seriously ill and had been treated medically and not having been cured had decided on their own to seek relief by attending the prayer and healing service as a last resort.

The JHU  wants the pastor charged under the law. For what? Is it for conducting a prayer or healing service (I am not sure what it was called) to which the women came on their own free will? Or is it for preaching that God answers the prayers for the cure of diseases? 

Wikipedia describes faith healing as a concept that religious belief ("faith") can bring about healing—either through prayers or rituals that evoke a divine presence and power toward correcting disease and disability in particular indicated individuals. Belief in divine intervention in illness or healing is related to religious belief in general. In common usage, "faith healing" refers to notably overt and ritualistic practices of communal prayer and gestures (such as laying on of hands) that are claimed to solicit divine intervention in initiating literal physical healing.

 Claims that prayer, divine intervention, or the ministrations of an individual healer can cure illness have been popular throughout history. Miraculous recoveries have been attributed to myriad techniques commonly lumped together as "faith healing." It can involve prayer, a visit to a religious shrine such as Lourdes, where many healings and cures have been reported and many investigated by scientists and medical men.

The Catholic Church has given official recognition to 67 miracles and 7,000 otherwise-inexplicable medical cures since the Blessed Virgin Mary first appeared in Lourdes in February 1858. These cures are subjected to intense medical scrutiny and are only recognized as authentic spiritual cures after a commission of doctors and scientists, called the Lourdes Medical Bureau, has ruled out any physical mechanism for the patient’s recovery. (Wikipedia)

Faith is an essential component of Christianity. The Bible, especially the New Testament, teaches belief in, and practice of, faith healing. Of course the Catholic Church does not practice such services nor if I am right does it recognize those outside the Church as authorized to do so. But that is an internal dispute among Christians. 

Generally the Church has not accepted miracles of healing without complete investigation. But there is no doubt that Jesus himself healed and similar healing took place during the Early Church and throughout history in Christian countries.

Other religions like Islam I believe also has divine healing. The question is with regard to the attitude of the law towards such faith healing. The law no doubt must protect those who can be misled particularly if they are dissuaded from seeking the normal medical treatment available and made use of by other people. Children for example cannot decide for themselves and if their parents were to withhold the usual medical treatment and expose their children to faith healing alone to the exclusion of medical treatment, would be acting irresponsibly.

I think parents who through such actions bring about the death of their children could be charged under the Child Protection laws in USA.  But even there, there is exemption for those whose religious belief makes them resort only to spiritual means rather than medical treatment for cure wholly or partially.