Does the Oregon law allow Doctors who, who moral or religious reasons, to refuse to prescribe life-ending medicataion to terminal patients?
The issue to me, however, is that no doctor should be writing prescriptions to help someone kill themselves. It's a breach of medical ethics, and contributes to the culture of death.
But the fact that it's morally wrong doesn't give the federal government the authority to step in. This is quite different from the Terri Schiavo situation, where a woman was murdered (without her consent). I believe Congress could step in in that case, as it was a denial of her federal civil rights.
From http://www.ohsu.edu/ethics/guidebook/chapter15.pdf
"If the attending physician decides not to participate, he/she promptly needs to provide the patient with a referral or a source of information about participating providers. Physician-assisted suicide is a legal medical practice, and the attending physician who declines to participate may not abandon the patient. A timely referral to a participating provider or to a resource for information concerning participating providers should minimize claims of abandonment."