When President-elect Trump announced he would impose sweeping tariffs on key trading partners on his first day in office, he signaled a return to a favorite strategy: a reverse carrot-and-stick that applies the stick of dire consequences in order to force countries to give him what he wants.

Trump's recent online post indicated these tariffs would be used to address border issues, specifically drugs and migrants.

Jamieson Greer, Trump's pick for US trade representative, will play a pivotal role as Trump carries out tariffs hikes on Mexico, Canada and China.