What is one way that the United States does NOT restrict voluntary trade? A The United States outlaws certain types of business transactions, because they can harm the general population. B The United States is part of the North American Free Trade Agreement, making it easier for companies in Mexico and Canada to sell their goods in the United States. C The United States imposes tariffs (taxes) on some imported goods, making them very expensive to buy in the United States. D The United States has imposed sanctions on the Russian Federation, making it so banks based out of the United States cannot do business with Russian companies.