Since Lyndon Johnson was a dominant figure in Texas politics, he had many friends in the Texas oil business.  They enjoyed a mutually beneficial relationship as his career progressed and the business men became wealthier and wealthier.  This group was becoming increasingly concerned as President Kennedy believed the oil depletion allowance was costing the government a lot of revenue and was giving the producers an unwarranted free ride.  Beyond this simple economics, this group was far more conservative than the president and liked little of the way he was running the country.   Quote