The last-minute deal had echoes of Trump's first administration, when he threatened Mexico with tariffs and Sheinbaum's predecessor Andrés Manuel López Obrador defused the threat, sending thousands of troops under his newly created National Guard to deter migrants from crossing the border.

President Trump granted Mexico and Canada a 30-day reprieve on U.S. tariffs after both nations agreed to intensify efforts to block illicit drugs and migrants.

Trump has long been threatening to impose a 25 per cent tariff on imports from Canada and Mexico until they clamped down on drugs, particularly fentanyl, and migrants crossing the border, in a move th