U.S. President Donald Trump’s long-threatened tariffs are here, plunging the country into an escalating trade war with China, Canada and Mexico. In response, all three countries announced retaliatory measures. (AP Video by Martín Silva Rey, Eugene Garcia, Mike Householder and Manuel Valdes)

How are Canada, Mexico and China responding to Trump’s tariffs? AP explains

U.S. President Donald Trump’s long-threatened tariffs are here, plunging the country into an escalating trade war with China, Canada and Mexico. In response, all three countries announced retaliatory measures. (AP Video by Martín Silva Rey, Eugene Garcia, Mike Householder and Manuel Valdes)