The Financial Post reports in its Thursday, April 10, edition that Canada amped up its retaliatory measures against Donald Trump's tariffs today as the United States President brought his trade war to the world. A Canadian Press dispatch to the Post reports that a 10-per-cent baseline tariff on imports to the U.S. from most countries, and higher duties on dozens of nations, came into force just after midnight following days of turmoil in global markets. While Canada is not being targeted by Mr. Trump's global tariffs, the country is being hit by U.S. automobile, steel and aluminum tariffs and still faces the ongoing threat of economy-wide fentanyl-related tariffs. Ottawa added to its retaliatory measures today in response to the automobile duties by implementing similar tariffs on vehicles imported from the United States. Unlike the American duties, Canada will not tariff auto parts or Mexican vehicles and components. On Tuesday, Mr. Trump boasted that dozens of countries have reached out to try to make deals. His attempt to realign global trade is causing cracks to appear in Republican solidarity, with some senators questioning Tuesday whether it was the right move.