Trade Wars Are Destructive. Of Course Trump Wants One.

.. as with so many other policies he has supported, he appears to have little understanding of this one.

.. Many White House aides, including Mr. Trump’s chief economic adviser, Gary Cohn, appeared to be caught off guard by the decision; on Wednesday, Mr. Cohn had warned that he might resign if Mr. Trump went through with the tariff plan.

.. The stock market fell sharply after the announcement because investors feared that the move was the first of several that could result in escalating disputes

.. The steel and aluminum tariffs are ostensibly aimed at punishing China, which has been driving down prices for those commodities by producing far more metal than the world can use. But Mr. Trump’s move will have a limited effect on China because much of the steel and aluminum the United States imports actually comes from allies like Canada, Brazil, South Korea and Mexico.

.. the move could hurt American businesses that use these metals, including auto and construction companies

.. If Mr. Trump were truly interested in getting China to reduce its excess production, he would have worked with the European Union, Canada, Japan, South Korea and other countries to put pressure on Beijing. Those nations tend to be closely aligned with the United States and have also been hurt by China’s mercantilist economic policies.

.. threatening to retaliate forcefully against the new Trump tariffs. They could do so by bringing cases against the United States at the World Trade Organization, or by doing what Mr. Trump did and unilaterally imposing new tariffs on American exports like soybeans and Boeing planes.

.. Canada imports more American Steel than it exports to the United States, giving it the ability to hurt the very industry Mr. Trump claims to want to help.

.. Chrystia Freeland, says Canada buys about half of American steel exports.

.. for every new job at a steel mill or aluminum smelter that is created by this trade decision, the country could lose as many or more jobs at businesses that use those metals, which will now cost more. This is one of the reasons that trade wars are, in fact, not easy to win.

.. Mr. Trump clearly sees trade as a zero-sum game.

.. He and some of his most protectionist advisers, including Peter Navarro, think that if China and Mexico sell the United States more things than they import from America, they are winning.