Description: This paper discusses the following cases: Rudolph V. United States- concerning taxability of agent convention travel, State Board Insurance v. Todd Shipyards Corporation- concerning premium tax for unlicensed insurers, United Services Life Insurance Company v. Delaney- concerning aviation restrictions in a life insurance policy, Metropolitan Life Insurance Company v. Wood- concerning conditional approval, Hartford Live Stock Insurance Company v. Phillips- concerning livestock insurance with an undisclosed pre-existing condition, State Security Life Insurance Company v. Kinter- concerning the due date for monthly premiums to prevent lapsation.