The AMA has nothing to do with anything; most doctors don't even belong to it.
That might be your opinion but the Judge certainly respected the ethical concerns of the CHO. The AMA has the Code of Ethics. The CHO sited ethics as the reason their physicians could not perform a trach or insert Jahi's feeding tube. The Judge honored that ethical concern and required them to work out a settlement agreement.
THE COUNCIL ON ETHICAL AND JUDICIAL AFFAIRS
In a rough analogy between the structure of AMA and that of the Federal Government, the Officers and the Board of Trustees constitute the Executive Branch; the House of Delegates the Legislative Branch; and CEJA the Judicial Branch. Oversight of the Code of Medical Ethics resides with CEJA, which is charged with interpretation of the Principles of Medical Ethics and issuing and promulgating Opinions on ethical matters.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3399321/