During the tariff showdown, the U.S. pledged to stem the smuggling of weapons into Mexico. But this will be no easy task.

Yahoo Finance will chronicle the latest news and updates on Trump's tariffs — from the threats to the eventual policy.

President Trump has cited illegal flows of fentanyl and migrants as the main reasons for a planned 25% tariff on Mexican ...

U.S. President Donald Trump and Mexican President Claudia Sheinbaum say their planned tariffs are on hold for a month to give ...

Drug policy researcher Jonathan Caulkins said there were 21 large fentanyl seizures at the Mexican border for every one along ...

A line of Mexican National Guard and Army trucks rumbled along the border separating Ciudad Juárez and El Paso, Texas.

The Mexican troops will be posted to hot spots along the border with high rates of illegal migration and drug and weapons ...

While Trump delayed the tariffs on Canada and Mexico, levies on China have taken effect and the trade war and economic ...

Mexican soldiers are deployed along the U.S.-Mexico border following deal after Trump threatened tariffs against Mexico.

Border seizures of fentanyl, a drug that the Trump administration has declared part of a national emergency, declined 18.8% ...

Around 1,650 troops from Mexico's National Guard arrived in Juárez, Mexico on Tuesday as part of 10,000 troops sent to reinforce the southern border.