U.S. President Donald Trump is intensifying his push on tariffs following a recent federal court ruling, raising pressure on Korea’s incoming administration ahead of soon-to-begin full-scale trade negotiations with Washington.

By Hyunjoo Jin and Hongmei Li SEOUL/SINGAPORE (Reuters) -Shares in South Korean and Vietnamese steelmakers, major Asian exporters of the metal to the United States, dropped on Monday after U.S. President Donald Trump said he would double tariffs on imported steel and aluminium to 50%.

U.S. stocks opened lower after President Donald Trump announced plans to double tariffs on imported steel and aluminum.

FishUSA, a Fairview-based fishing equipment company, joined a lawsuit challenging tariffs imposed under the International Emergency Economic Powers Act. It's too soon to know if a recent ruling by a U.S. appeals court will reduce the size and number of tariffs imposed by the Trump administration.