Our 25th president loved tariffs, and oversaw an expansion of U.S. territory around the globe. But William McKinley is best ...

Trump is right that McKinley played a critical role in American history, but not for the reasons Trump articulates.

William McKinley, the 25th U.S. president, is credited with using steep tariffs to protect the fledgling tinplate industry in the late 19th century. Did they work? Were they good for the U.S. economy?

Growing up in the iron-producing region of eastern Ohio in the 1840s, future president William McKinley would hear his father complain that foreign competition lowered wages and made honest men ...