The administration of U.S. President Donald Trump is urging Mexico to open criminal investigations into politicians suspected of cartel ties and to extradite any who face indictments north of the border, according to sources cited by Reuters. The pressure was conveyed at least three times by Secretary of State Marco Rubio in meetings with Mexican officials beginning in late February. Washington has warned that failure to act could trigger new tariffs on Mexican exports, the sources said. U.S. officials have also floated appointing a fentanyl ‘czar’ to coordinate anti-drug efforts and demanded stricter inspections of cargo and travelers along the border. The requests reportedly single out five sitting members of President Claudia Sheinbaum’s Morena party and a former senator, with Baja California Governor Marina del Pilar Avila among those named. Mexico’s Foreign Ministry denied receiving any formal demand to probe, prosecute or extradite specific office-holders. The push follows Mexico’s handover of 29 cartel suspects to the United States in February after earlier tariff threats. A crackdown on serving politicians would mark an unprecedented step against narcocorruption and could carry significant political risk for Sheinbaum, whose coalition holds majorities in Congress.