As wealthier areas are pushing back against huge A.I. data centers, speculators are pitching places like Doña Ana County, N.M., on their vision. Local officials are eager for a deal — even if they don’t quite know the terms.

Moscow has ramped up covert operations in Mexico, with spies meeting handlers in its bustling capital and seaside resorts, U.S. officials say.

© Marian Carrasquero for The New York Times

A former secretary of homeland security on the illegality of Trump’s boat strikes.

Cartel extortion is pushing up prices in Mexico — and becoming a political problem President Claudia Sheinbaum can’t ignore.

Readers respond to a guest essay about America’s fentanyl problem. Also: A dark echo at Penn.

From Sweden to Brazil, six small companies talk about how they are communicating with their U.S. customers amid uncertainty over Trump’s changing tariffs.

Everything the Trump administration is doing to stop the flow of drugs is just making the problem worse.

China will require licenses for export of 13 chemicals used to make the deadly drug, another indicator of thawing tensions between the world’s two largest economies

President Trump has used his sweeping global tariffs as an economic tool and a political cudgel. A decision invalidating them could hamper his power.

Zhi Dong Zhang, who escaped house arrest in Mexico this summer, is accused of supplying cartels with fentanyl from China, smuggling and money laundering millions under the alias “Brother Wang.”