President-elect Donald Trump vowed to enact hefty new tariffs on Mexico, Canada and China as soon as he takes office as part of a crackdown on illegal immigration and drugs.

MEXICO CITY — Mexico’s president responded angrily Tuesday to President-elect Donald Trump’s pledge to impose a 25 percent tariff on its products if the country didn’t curb the flow of irregular migrants and fentanyl, warning that the penalties would only wind up causing inflation and unemployment in the United States.

President-elect Donald Trump's threatened tariffs on imports from Mexico and Canada would reignite inflation in 2025, hurt the economy, experts say.