President Trump has ordered military action against Latin American drug cartels and has threatened a new tariff. President Claudia Sheinbaum of Mexico has pushed back.

© Tierney L. Cross/The New York Times

After months of negotiation and concessions, President Claudia Sheinbaum of Mexico has found herself in a cycle of pressure from the White House.

© Luis Antonio Rojas for The New York Times

A U.S. strike on cartels in Mexico won’t fix the deep problems that allow organized crime to flourish.

Canada’s steel industry fears that Chinese steel facing steep tariffs in the United States will be sent north and overwhelm the Canadian market.

Relying on Asian suppliers is no longer a safe bet for many factories in Mexico. Companies are racing to change, and they are being encouraged by the government.