The United States is abandoning the economic system that made it rich and powerful, gambling that it can become more prosperous waging a global trade war.

Canadian Prime Minister Mark Carney made it known that President Donald Trump’s sweeping tariffs have soured relations to the point of no return as he announced Canada’s retaliatory tariffs against the U.

President Trump’s biggest tariff blitz yet sends a clear message to U.S. and foreign companies alike: The era of globalization is over. Trump’s “Liberation Day” plan to impose sweeping new duties on trillions of dollars in imports shows that the White House wants goods sold to American consumers to be built in American factories—bringing down the curtain on U.