President Claudia Sheinbaum is detaining more migrants, seizing more fentanyl and positioning her country as a key ally against China. But the U.S. stance has shifted, too.

Mexican President Claudia Sheinbaum is pulling out all the stops to support the roughly 5 million undocumented Mexicans living in the U.S.

Mexico is racing to provide extra shelter capacity for tens of thousands of people in cities along the US border, one of which declared a state of emergency ahead of Donald Trump’s plan to remove record numbers of migrants.

United States Customs and Border Protection agents put up barricades on the Paso del Norte International Bridge that connects Mexico's Ciudad Juarez with El Paso, Texas. The barbed wire fencing is placed on the border as part of security exercises ahead of Donald Trump taking office for a second term as US president on January 20.