The deal reached this week by President Donald Trump and Mexican President Claudia Sheinbaum to postpone implementing tariffs appeared to be largely focused on stopping the importation of the synthetic opioid fentanyl — a goal that is of particular interest in San Diego and Baja California.

President Claudia Sheinbaum’s government said the National Guard members had redeployed to 18 cities and towns along the U.S.-Mexico border as part of a deal to delay U.S. tariffs.