Canada and Mexico are expected to intensify efforts this week to avoid punishing 25% tariffs on their exports to the U.S. in talks to persuade President Donald Trump's administration that their steps to increase border security and curb fentanyl trafficking are working ahead of a March 4 deadline.

The White House published three separate Executive Orders that imposed blanket tariffs on Canadian, Mexican and Chinese imports. The Executive Orders are all similar in scope, with each having a unique justification for imposing the associated tariffs.

The 25% tariffs that President Donald Trump has threatened on imports from Mexico and Canada would cause pain in Arizona. Prices on fruits and vegetables, gas and housing would rise and tourism – and the tax revenue it brings – could fall.