Why Trump's tariff proposals would harm working Americans

At the beginning of its history, the United States relied on tariffs—taxes on imported goods—as its major source of government revenue. That changed starting in the early 20th century, with the enactment of the federal income tax and the advent of a new consensus recognizing tariffs as regressive, burdening the working class while leaving untaxed much of the income accruing to the wealthy. At present, less than 2 percent of government revenue in high-income countries comes from import taxes.
Today, however, the United States may be on the cusp of reverting to an antiquated approach to funding…