Mexican President Claudia Sheinbaum has pledged to defend Mexican citizens "at every level" amid growing anger over the deaths of Mexican nationals held in US immigration custody, according to reporting by The Guardian.

The statements mark a notable shift in tone from Sheinbaum, who has spent more than a year carefully navigating relations with the Trump administration, responding to provocations with measured language while largely meeting US demands. Her latest remarks suggest a harder line is emerging from Mexico City.

Deaths in custody draw condemnation

The Mexican government has formally voiced concern over the deaths of its citizens while in the custody of US immigration authorities. The issue has intensified domestic pressure on Sheinbaum to take a more assertive posture toward Washington.

Sheinbaum has framed the matter as one of national dignity and human rights, according to The Guardian, positioning herself as a defender of Mexicans both inside the country and abroad.

Cuba energy blockade adds to friction

Beyond the deaths in custody, Sheinbaum has also pushed back against the Trump administration's decision to impose an energy blockade on Cuba - a move that has drawn criticism from several Latin American governments.

Mexico's opposition to the Cuba policy places it at odds with Washington on a regional issue where the US has sought to build broader support for economic pressure on Havana.

A careful balancing act

Analysts and observers note that Sheinbaum, a progressive leader who took office in late 2024, has generally sought to avoid direct confrontations with the Trump White House, particularly on trade and migration issues where Mexico has significant economic exposure.

Her willingness to defy US pressure in certain areas, however, stands in contrast to some other governments that have acquiesced to Washington's demands. The Guardian reports that Mexico has been among the more resistant voices in its hemisphere, even while keeping diplomatic channels open.

The dual flashpoints - migrant deaths and the Cuba blockade - suggest the bilateral relationship is entering a more contested phase, even as both governments have maintained formal cooperation on border security and other matters.

How far Sheinbaum is prepared to escalate her public criticism of the Trump administration remains to be seen, but her recent statements indicate that the era of near-unconditional accommodation may be giving way to a more confrontational posture from Mexico City.