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Trump’s New 50% Canada Tariffs Face Serious Legal Challenge, Trade Law Expert Says

August 17, 2026 Markham Hislop

Trump turned to the rarely used Section 338 after the Supreme Court rejected his use of IEEPA for tariffs. Jennifer Hillman explains why his latest tariffs against Canada may also exceed presidential authority. [Read more]

In the Spotlight

Trump Threatens Canada With Tariffs As American Oil Floods North

by Markham Hislop in Markham on Energy

Donald Trump is threatening Canada with 50 per cent tariffs even as U.S. crude oil flows north. The trade reveals just how deeply integrated the two economies have become. [Read more]

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  • Canada Should Create Its Own Trusted Traveller Program Instead of Relying on Americans August 17, 2026
  • Trump’s New 50% Canada Tariffs Face Serious Legal Challenge, Trade Law Expert Says August 17, 2026
  • Largest Clean Energy Project in North American History Launched in Atlantic Canada August 17, 2026
  • Trump Threatens Canada With Tariffs As American Oil Floods North August 17, 2026
  • Andrew Coyne: Trump has forced Canada to rethink its place in the world August 14, 2026
  • Robert Pape: Cheap Drones Are Ending the Era of American Military Dominance August 13, 2026
Latest News
  • Canada Should Create Its Own Trusted Traveller Program Instead of Relying on Americans
  • Trump’s New 50% Canada Tariffs Face Serious Legal Challenge, Trade Law Expert Says
  • Largest Clean Energy Project in North American History Launched in Atlantic Canada
  • Trump Threatens Canada With Tariffs As American Oil Floods North
  • Andrew Coyne: Trump has forced Canada to rethink its place in the world
Markham on Energy
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    August 17, 2026
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    January 27, 2026

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