Trump has insinuated that the Monetarist age is at an end. Monetarism, free markets in currency and credit was thrust upon us in the early 70's when the Bretton Woods Agreement was rescinded. That held all currencies within narrow trading ranges which prevented manipulation by nations for trade advantage.
Canada's dollar value is now a function of computer algorithms designed by 'quants' for Hedge Funds, who have a vested interest in creating turbulence in the exchange rates.. rather than as a reasoned long term government policy.
It is a pillar of Global Free Market Capitalism (along with free trade, deregulation of markets and banking, privatization), which is failing catastrophically around the world.