Prohibit consent as a defense for physician assisted suicide

SB 136 amends Montana's criminal code (Section 45-2-211, MCA) to state that a patient's consent to physician aid in dying is not a defense to a homicide charge against the physician. The bill defines "physician aid in dying" as a physician prescribing a lethal medication for the patient to self-administer, excluding standard comfort care or withholding life-sustaining treatment. This directly affects physicians who provide such aid, making their actions prosecutable as homicide if consent is claimed as a defense. The law takes effect July 1, 2025, and does not impact existing practices of comfort care or end-of-life treatment under Montana law.