Trade minister Takeo Hiranuma said Tuesday that he plans to file a complaint today with the World Trade Organization against a U.S. move to invoke import curbs on steel products.

Tokyo will officially file the complaint with the WTO after the U.S. action takes effect today local time, Hiranuma told reporters Tuesday, adding the Ministry of Economy, Trade and Industry is still weighing the option of retaliating against the U.S.

Earlier this month, the U.S. revealed its plans to impose import tariffs of up to 30 percent on certain steel products to protect the struggling U.S. steel industry. It said it would implement the curbs as a safeguard measure under WTO trade rules.