Suppose the demand for cars in the United States is given by the following equation: QD = 60 - 2P where QD is the quantity of cars demanded in millions and P is the price of a car in thousands of dollars. To simplify your analysis, assume that the market for cars is perfectly competitive and that the marginal cost of producing a car is constant at $25,000 in the United States, $20,500 in Canada, and $20,000 in Japan. Suppose the United States has a 20% tariff on all auto imports. Analyze the proposal for the United Sates to form a customs union with Canada with a uniform external 20% tariff on auto imports. Specifically: 1. What would be the effect on U.S. consumers? 2. What would be the effect on the U.S. government revenue