Canada and Mexico on Friday sought to show U.S. President Donald Trump's administration evidence of progress in curbing the flow of fentanyl opioids into the U.S. ahead of a March 4 deadline for punishing 25% tariffs on their goods imports.

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

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.