The unprecedented move came one day after Mexico's Attorney General's Office announced it was dropping the drug trafficking case against retired Gen. Salvador Cienfuegos.

A person with knowledge of the arrest said Cienfuegos was arrested on a U.S. Drug Enforcement Administration warrant.

Enrique Pena Nieto is being accused of partially funding his 2012 election campaign with bribes from the Brazilian construction company Odebrecht, which has admitted to involvement in widespread corruption in Latin America.

A Colombian drug trafficker testified that Mexican cartel leader Joaquin "El Chapo" Guzman once boasted about paying a $100 million bribe to the former president of Mexico.

Prime Minister Justin Trudeau confronted U.S. President Donald Trump over his steel tariffs at the signing of the new USMCA trade deal on Friday.

It's been more than a year in the making, but the United States-Mexico-Canada Agreement (USMCA) was finally signed Friday in Buenos Aires, on the sidelines of the high-profile G20 summit.

Mexican officials are disputing U.S. President Donald Trump’s latest claim that Mexico will “very easily” pay for his promised border wall.

More than 120 politicians have been killed during Mexico's bloody election campaign, in a series of slayings linked to organized crime.

Prime Minister Justin Trudeau and Global Affairs minister Chrystia Freeland responded with another $16.6 billion worth of tariffs against U.S. imports.

U.S. President Donald Trump on Tuesday accused Mexico of doing “nothing” to stop illegal immigrants crossing into the United States, and repeated his election campaign pledge that Mexico would pay for his planned border wall.