In 1973-1974, the U.S. faced the so-called “Energy Crisis” due to the Arab oil embargo and a quadrupling of world crude oil prices by OPEC. This led the U.S. to use a” Price Control” policy in the domestic energy market. The effects of such policy are explored and well documented. However, the responses of OPEC producers to such a policy need further attention. This paper examines the effects of these price controls on OPEC‟s extraction path. It also examines the relation between the harm function and the change in OPEC production. The results show some evidence that OPEC did respond differently to price controls applied by the U.S. For some periods it cut production, while in other periods production levels increased. The results also show...