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.

Canada and Mexico are trying to get the United States not to follow through on a promise by President Trump to impose tariffs of 25% on imported goods.

Mexico on Thursday handed over major figures in the country's criminal underworld to U.S. authorities, part of a surprise extradition of nearly 30 jailed convicts or others accused of ties to violent drug cartels.