U.S. President Donald Trump on Saturday ordered 25% tariffs on Canadian and Mexican imports and 10% on goods from China starting on Tuesday and declared that they would remain in place until a national emergency over the drug fentanyl and illegal immigration to the U.

President Trump announced sweeping tariffs on goods imported from Mexico, Canada and China, sending shocks through the global supply chain and raising fears about consumer costs.

Steep new tariffs on goods coming from Canada, Mexico and China are taking effect Saturday — and although the details are still unclear, experts are worried about the impact on the national economy and the north country.

Donald Trump famously renegotiated an existing trade pact with the countries in his first term. Now he's going back for more.