Smoke filled the skies, and chaos erupted across parts of Mexico after the Mexican army killed a powerful cartel leader on Sunday, prompting new travel warnings and questions about safety for United States tourists.

The Mexican army killed the country’s most powerful cartel leader and one of the United States’ most wanted fugitives, notching a major victory.

A group of lawyers and family members of cartel members accused Mexico’s government on Monday of breaking the law by sending nearly a hundred Mexican citizens to the United States without an extradition order.

Mexico has sent infamous drug lord Rafael Caro Quintero to the United States along with 28 other prisoners requested by the U.S. government.

President Donald Trump's threat of tariffs on goods from Mexico, Canada and China is aimed at stopping the flow of fentanyl into the U.S. Ingredients for fentanyl are produced in China and used by pharmaceutical companies to make legal painkillers.

Mexico President Claudia Sheinbaum says President Donald Trump’s executive order moving toward designating drug cartels as foreign terrorist organizations would only impact Mexico if there’s close coordination between the two governments.

A Colombian national police officer who was part of an elite unit that worked closely with U.S. anti-narcotics agents has been extradited to Miami to stand trial on charges he betrayed the Drug Enforcement Administration to the same traffickers they were jointly fighting.