Who is Trump trying to stick it to? The US International Trade Administration reports. Would you have guessed? 
Trade Remedies in the Steel Sector include Antidumping duties (AD), countervailing duties (CVD), and safeguards. These are internationally agreed upon mechanisms to address the market-distorting effects of unfair trade, or serious injury or threat of serious injury caused by a surge in imports. The nice thing about safeguard tariffs is that they do not require to be motivated by “unfair” practice, it is sufficient to assert injury caused to a domestic industry. The table below provides statistics on the current number of trade remedies the United States has against imports of steel mill products from various countries.
So much for the country without the lowest trade barriers…