Claudia Sheinbaum Warns of "Real Risk" of Foreign Intervention in Mexico Elections

Mexican President Claudia Sheinbaum warned that Mexico faces a "real risk" of foreign intervention in its elections, escalating a political fight over a newly approved constitutional reform that would allow authorities to annul an election if outside interference is proven.

The warning came as Mexico's Congress advanced one of the most consequential changes to the country's electoral rules in years. The reform adds foreign intervention or interference as grounds for nullifying an election, a measure backed by Sheinbaum and Morena as a shield for national sovereignty, but criticized by opponents who say it could open the door to politically motivated challenges to valid results.

"Yes, there can be a risk of foreign intervention in Mexico's elections, yes," Sheinbaum said during her morning press conference from the National Palace.

The president linked the measure to what she described as past examples of foreign money reaching Mexican organizations involved, directly or indirectly, in the country's political arena. Without naming USAID explicitly, Sheinbaum referred to Mexicanos Contra la Corrupción y la Impunidad, known as MCCI, and said the organization had received money from U.S. institutions through the American embassy.

"It was demonstrated in the case of Mexicanos Contra la Corrupción, or for corruption, that they were financed by institutions of the United States through the embassy, and that in one way or another they supported a candidate," Sheinbaum said.

Her comments put MCCI, one of Mexico's most visible anti-corruption organizations, back at the center of a long-running dispute between the ruling party and civil society groups that have investigated government corruption. In 2024, Mexico's Financial Intelligence Unit said MCCI received 96.7 million pesos from the U.S. Embassy in Mexico through the U.S. Agency for International Development between 2018 and early 2024. MCCI has rejected accusations of partisan activity, saying international cooperation funding is legal and that it has not carried out political party work or participated in campaigns against any party.

The reform modifies Article 41 of the Mexican Constitution. In the version approved by the Chamber of Deputies, an election could be annulled "when acts of foreign intervention or interference are proven to have influenced electoral results." The measure passed the lower house with 307 votes in favor, 128 against and one abstention, after a late change aimed at narrowing language that critics said was too broad.

Reuters reported that the Senate approved the amendment Friday, moving the measure further through the constitutional process.

The debate now shifts to the legal mechanics. Sheinbaum acknowledged that secondary legislation must define how foreign intervention would be proven and warned that the rule cannot be left to subjective interpretation.

"The issue is how you demonstrate that there was, in fact, foreign intervention in an election, and that has to come in the law very clearly," Sheinbaum said, adding that it must be shown with evidence.

Supporters argue that the change closes a gap in Mexico's electoral system at a time of rising global concern over disinformation, digital manipulation and foreign pressure campaigns. The amendment defines foreign interference broadly, including illicit financing, propaganda, systematic disinformation, digital manipulation and actions by foreign governments or agencies. It also includes political, economic, diplomatic or media pressure intended to influence public opinion.

For Sheinbaum, the central argument is sovereignty: "In Mexico, Mexicans decide," she said.