Mexico's new president, Andres Manuel Lopez Obrador, takes office on Dec. 1. A look at what Mexico could become under his ruling.

MARY LOUISE KELLY, HOST: Mexico has a new president. Claudia Sheinbaum took the oath of office today and became modern Mexico's first ever female head of state.

It's an observation shared by many who are now trying to assess whether it will be more of the same when former Mexico City Mayor Claudia Sheinbaum takes over as president Oct. 1.

MEXICO CITY — Presidents are often defined by their first crisis, and Mexico’s new leader is facing a big one: a clash of democratic institutions that could fundamentally upend the country.

The attorney for drug lord Joaquin “El Chapo” Guzman, and the new president of Mexico, tonight are in a Dirksen building ...

Mexico’s foreign policy is headed toward greater radicalization. The clues have been clear. Newly inaugurated President Claudia Sheinbaum has restricted the diplomatic work of the U.S ...

Mexico’s newly elected president, Claudia Sheinbaum, is very aware of both the issue and how much needs to happen to address it: She’s a politician who also happens to be a climate scientist.

Sheinbaum, the country’s first female president, represents a new era in Mexico. It should include resolution of one of the country’s greatest ongoing catastrophes.

Mexico's new president, Claudia Sheinbaum, has been famously quiet about her Jewish ancestry. Yet she will live and govern Latin America's second-largest economy from the Palacio Nacional, ...

President Claudia Sheinbaum of Mexico in Congress last month, after her swearing-in. Her party’s overhaul of the Mexican judiciary “will be an example to the world,” she has said.