
U.S. President Donald Trump signs the United States-Mexico-Canada Agreement (USMCA) at the White House in Washington D.C. Jan. 29, 2020. (Xinhua/Liu Jie)

U.S. President Donald Trump signs the United States-Mexico-Canada Agreement (USMCA) at the White House in Washington D.C. Jan. 29, 2020. (Xinhua/Liu Jie)