Donald Trump delivers a speech on his economic policy in Monessen, Pa., on Tuesday. Trump has themed his economic message, in large part, on critiques of free-trade deals and a promise to levy tariffs against "cheating" trade partners such as China and Mexico. The years that followed saw GOP nominees consistently run on plans to open markets and reduce barriers to trade -- until now. If Republicans nominate Trump for president next month as expected, the Pennsylvania speech could mark a turning point for the party on trade -- and a repudiation of the GOP's business-lobby wing -- in rather dramatic fashion. Hoover levied a sweeping tariff that economists generally agree did not work as intended.

Source: Washington Post June 28, 2016 19:41 UTC