LyrArc Article Gist
As Neil Irwin points out in the NYT the effects of the steel tariffs announced by president Trump are negligible on the U.S. economy- the impact of $30 billion in steel imports and $17 billion imports of aluminium on a $20 trillion economy. As Commerce Secretary Wilbur Ross pointed out in a television interview it is the impact of a fraction of a penny on a food can, and tenths of one percent in the price of a new car. 

What markets when settling down look at is the facts from how situations were handled from tariffs on solar panels to action on NAFTA. Twitter comments of Trump have not reflected actual policy as it was carried out as Neil Irwin points out. On tariffs for solar panels this has fitted in with action from preceding administrations says Irwin and also fits in with Trump administration policy to send a message when lower prices subsidized by foreign governments hurt U.S. producers. On NAFTA Commerce Secretary Wilbur Ross and other key economic advisers around Trump have acted along with the calls from prime minister Trudeau and contacts with Economics minister Videgaray of Mexico, to a policy of making some changes to NAFTA, very different from the calls for rejecting NAFTA made earlier by president Trump.