https://en.wikipedia.org/wiki/Legality_of_euthanasia
https://en.wikipedia.org/wiki/Euthanasia_in_the_United_States
Active euthanasia: killing a patient by active means, for example, injecting a patient with a lethal dose of a drug.
Active euthanasia is illegal throughout the United States. Patients retain the rights to refuse medical treatment and to receive appropriate management of pain at their request (passive euthanasia), even if the patients' choices hasten their deaths. Additionally, futile or disproportionately burdensome treatments, such as life-support machines, may be withdrawn under specified circumstances and, under federal law and most state laws only with the informed consent of the patient or, in the event of the incompetence of the patient, with the informed consent of the legal surrogate.
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Involuntary Euthanasia is currently illegal in all 50 states of the United States. Assisted suicide is legal in 10 jurisdictions in the US: Washington, D.C. and the states of California, Colorado, Oregon, Vermont, New Mexico, Maine,New Jersey, Hawaii, and Washington. The status of assisted suicide is disputed in Montana, though currently authorized per the Montana Supreme Court's ruling in Baxter v. Montana that "nothing in Montana Supreme Court precedent or Montana statutes [indicates] that physician aid in dying is against public policy."