In the Mutual Life Insurance Company v. Phinney case in 1899, the U.S Supreme Court ruled on a dispute involving an insurance policy claim. The plaintiff, Mrs. Phinney, was seeking to recover money from her late husband's life insurance policy with Mutual Life Insurance Company of New York after he committed suicide while allegedly insane. The insurer refused to pay out on the grounds that Mr. Phinney had intentionally caused his own death and thus breached a clause in his contract which stated that no payment would be made if he died by his own hand (suicide). However, Mrs.Phinney argued that her husband’s insanity meant he could not have formed intent to kill himself and therefore it should not be considered suicide under terms of the policy. The court sided with Mrs.Phinney stating that unless there is clear evidence showing otherwise or specific language within an insurance contract excluding coverage for suicides committed while insane; insurers must honor their policies even when insured individuals commit suicide during periods of insanity.

The dissenting opinion in the case of Mutual Life Insurance Company v. Phinney argued that the majority's decision was incorrect because it failed to consider a key aspect of insurance law: namely, that an insurer cannot be held liable for losses resulting from risks not covered by its policy. The dissent pointed out that the insured party had knowingly misrepresented his health condition at the time he applied for coverage, and therefore, this risk was not included in his policy. As such, when he died as a result of this undisclosed illness, his death did not fall within the scope of risks covered by his life insurance policy. Therefore, according to established principles of contract and insurance law, there should have been no obligation on part of Mutual Life Insurance Company to pay any claim arising from such death.