Mexico

Three officials from Mexico's immigration agency, two private security guards and the migrant accused of starting the fire, which killed at least 39, face charges of homicide and causing injury.

Migrants say they are facing increased harassment and unabashed cruelty by local, state and federal authorities as permanent residents' general attitudes toward immigrants shift.

Authorities said Wednesday that they're looking into the actions of eight people for possible misconduct at the detention center, where a fire killed 39 men.

The advisory follows the kidnapping of four Americans earlier this month in the city of Matamoros. The state's Department of Public Safety said "cartel activity" made trips to Mexico a "serious risk."

Their companions are recovering in a U.S. hospital. So far, only one arrest has been made in relation to the kidnapping.

Before the pandemic halted travel, some 1.2 million American citizens visited Mexico for health care. The number is rising quickly again, with border restrictions eased.

The State Department said the victims, who were found alive after days in captivity, are back on U.S. soil. Officials said they are in the process of returning the remains of two others to the U.S.

The abduction took place on the streets of Matamoros, Mexico. The FBI is offering a $50,000 reward for the return of the Americans and the arrests of those involved.

Tens of thousands of people filled Mexico City's vast main plaza Sunday to protest President Andrés Manuel López Obrador's electoral law changes they say threaten democracy.