Trade Minister Kim Hyun-chong will embark on his third trip to the U.S. in three weeks in efforts for South Korea to be exempt from Washington’s decision to impose stiff tariffs on steel and aluminum imports.

According to Seoul's Ministry of Trade, Industry and Energy, Kim will depart for Washington on Tuesday with a ministry official on trade cooperation Lee Yong-hwan.

The trade minister flew to the U.S. on February 25th amid signs that Washington was moving to regulate imported steel based on Section 232 of its Trade Expansion Act.

He returned home early this month but left for the U.S. again on March sixth and then returned on the eleventh. 

During his first trip, Kim met with the director of the White House National Economic Council Gary Cohn who has since resigned. He also met with Commerce Secretary Wilbur Ross, U.S. lawmakers and industry officials in manufacturing, agriculture and livestock. 

During the meetings, he stressed that South Korean steel is not a threat to the U.S. steel industry and rather contributes to the American economy through local investment.