The migration crisis in the Americas caused 1,238 people to die in 2021, including 51 children under the age of five and 728 migrants attempting to cross from Mexico to the United States, the border with the highest number of deaths worldwide, the UN International Organization for Migration (IOM) said. The number of deaths on the United States-Mexico border last year is significantly higher than in any year prior,” said one of the authors of the IOM report.