A U.S multinational corporation has a subsidiary in Mexico, After a Presidential election in the United States, the renegotiates the North America Free Trade Agreement (NAFTA) to incorporate a 15% tariff (tax) on all goods imported to America from Mexico. This makes imports from Mexico more expensive to Americas, all else held constant. What is the net effect on the nominal MXN/ USD exchange rate? What is the net effect on the US multinationals net income in U.S Dollars?