Former central banker Mark Carney will become prime minister after the governing Liberal Party elected him its leader Sunday in a landside vote with 85.9% support.

Canada could impose non-tariff measures such as restricting its oil exports to the United States or levying export duties on products if a trade dispute with the United States escalates further, Canada's energy minister Jonathan Wilkinson said on Tuesday.

By Jeff Mason, Andrea Shalal and David Ljunggren WASHINGTON/OTTAWA (Reuters) - President Donald Trump reversed course on Tuesday afternoon on a pledge to double tariffs on steel and aluminum from Canada to 50%,

The sudden shifts in trade policy have forced energy regulators and grid operators in northern border states to scramble to assess potential disruptions.

Trump also won consent for his trade wars from House Republicans, who approved language to make it much harder for Congress to block the tariffs.