During his first term, the Trump administration largely bypassed WTO rules by imposing tariffs on steel and other goods from countries including China and even U.S. allies.
Trump has announced plans to impose tariffs on goods from other countries after he takes office in January.
Okonjo-Iweala, who has both Nigerian and American citizenship, took office in 2021 as the first woman and first African to hold the job of WTO chief.
Her second term will officially begin next September.