Mexican President Claudia Sheinbaum said Saturday that U.S. President Donald Trump proposed sending American troops into Mexico to help her administration fight drug trafficking but she rejected it.

The cartoonish-looking salamanders have faced an uncertain future in the wild. But researchers hope that breeding axolotls in captivity and releasing them in the wild can help their numbers.

President Trump's tariff talk has been big — and also unpredictable. He's frequently made threats only to back off or shift deadlines. Here, a look at how the tariff agenda has rolled out.

The president's latest action on trade takes effect next week, and will slap a 25% tariff on imported cars and car parts. He says the measure will boost U.S. manufacturing.

Distraught families from across the country have already started reaching out about clothing items they say they recognize.

It was a week that saw not only more twists in the tariffs saga but also Trump's big Hill address, the suspension of aid to Ukraine, more firings at agencies, and more. NPR keeps track, day by day.

Trump put 25% tariffs on goods from Canada and Mexico on Tuesday. Markets tanked. And by Thursday, he had decided to broadly lift them.

The country claims Smith & Wesson and other gunmakers are turning a blind eye to hundreds of thousands of high-powered weapons made in the U.S that are illegally trafficked into in the hands of Mexican cartels.

Canada and China hit back swiftly after Trump's sweeping tariffs took effect Tuesday, raising fears of a global trade war. International markets, meanwhile, continued to slide.

Canadian and Chinese officials say they were already helping reduce fentanyl smuggling. Prime Minister Justin Trudeau said fentanyl crossing the northern border is "near zero."

The White House describes the tariffs as a response to inadequate border and drug enforcement. They are forecast to add thousands of dollars to the price of vehicles.

Up to 3,000 additional troops have been ordered to the U.S.-Mexico border by Defense Secretary Pete Hegseth, the latest in President Trump's efforts to prevent illegal crossings.

The unprecedented show of security cooperation comes as top Mexican officials are in Washington trying to head off the Trump administration's threat of imposing 25% tariffs on all Mexican imports.

As the US officially designates six Mexican cartels as terrorist groups, Mexico's president warns the United States against any violation of its territory.

Trump said he would delay imposing tariffs on Mexico for at least a month. In exchange, Mexican President Claudia Sheinbaum promised to send the country's National Guard to reinforce the border.