Keith Hennessey writes about Trump’s calls for protecting the steel industry from foreign competition:
Steel is an intermediate good. When you raise protectionist barriers against imported steel as Mr. Trump threatens, you temporarily help U.S. steelworkers. You also raise input prices for American firms that use steel to build bridges and buildings and make cars, and trucks, trains and train tracks, appliances, ships, farm equipment, drilling rigs and power plants, and tools and packaging. Higher input costs hurt American workers in those factories and on those construction sites.
Mr. Trump should ask the workers who make dishwashers at Whirlpool’s plant in Findlay, Ohio whether they’re in favor of more expensive steel. Or he can ask the John Deere workers who use steel at their factories in Iowa, Kansas, Louisiana, North Carolina, North Dakota, Tennessee, and Wisconsin. Or the auto workers at almost any U.S. car and truck assembly line. Raising prices for imported steel hurts all of these American workers.