Goldwater rule

Etymology
Named after US presidential candidate Barry Goldwater, who successfully sued for libel over a 1964 article that polled psychiatrists on his fitness for presidency.

Proper noun

 * 1) A section of the 's code of ethics, stating that it is unethical for a psychiatrist to give a professional opinion about a public figure they have not examined in person, and whose mental health they have not received consent to discuss.