The border wall is seen in the distance as shoppers walk with their purchases at Plaza Las Americas Mall near the US-Mexico border in San Ysidro, California, on November 26, 2024. US President-elect Donald Trump threatened to begin his presidency with a massive trade war -- and diplomatic crisis -- as he demanded China, Canada and Mexico stop illegal immigration and drug smuggling into the United States or face punitive US import tariffs. (Photo by Sandy Huffaker / AFP) (Photo by SANDY HUFFAKER/AFP via Getty Images)