Compassion and Choices, the largest choice-in-dying organization in the United States, wrote in the "Frequently Asked Questions" portion of their website (accessed on Oct. 27, 2006):

“The primary opposition to the idea that terminally ill, mentally competent people should be able to choose to hasten death with medical assistance often comes from religious sources, primarily the Catholic hierarchy and, more recently, the right-to-life movement.”

Oct. 27, 2006