The government crackdown on organized crime intensified after the Trump administration threatened retribution unless Mexico halted the supply of fentanyl into the United States, vowing high tariffs if the flow of migrants and drugs continued.

Mexico will wait and see if U.S. President Donald Trump goes through with his threat to slap tariffs on its southern neighbor on Tuesday, the nation's president said on Monday, adding that Mexico has back-up plans in case the tariffs go into place.

Only a couple years ago, manufacturers were fighting for space to relocate their operations to Monterrey, an industrial city in Mexico’s northeast, as they sought to move closer to the US and its vast consumer market.

Mexico President Claudia Sheinbaum said Monday that her administration was waiting to see if U.S. President Donald Trump goes ahead with plans to impose a 25% tariff on Mexican imports.