Why might the U. S. government pursue a trade policy that would raise the costs of products for American consumers?

Constituting less than 5 percent of the world's population, Americans generate and earn more than 20 percent of the world's total income. America is the world's largest national economy and leading global trader. The process of opening world markets and expanding trade, initiated in the United States in 1934 and consistently pursued since the end of the Second World War, has played an important role in the development of American prosperity. According to the Peterson Institute for International Economics, American real incomes are 9% higher than they would otherwise have been as a result of trade liberalizing efforts since the Second World War. In terms of the U.S. economy in 2013, that 9% represents $1.5 trillion in additional American income.

Explanation:

in terms of experimental research, mcdonald’s charging different prices in the two cities relates to