38 CFR 6.3: Incontestability of United States Government life insurance.

Discharge or release of an insured from military or naval service for the reason of fraudulent enlistment shall not invalidate United States Government life insurance issued on the basis of such service unless the Secretary determines that the insured was mentally or legally incapable of entering into a contract of enlistment. In such case the United States Government life insurance so issued will be canceled as of the effective date of such insurance.