LyrArc Article Gist
The WSJ calls it a chaotic runup while conceding that the stated purpose was clearly to stop fentanyl and migrants coming across the US land Borders with Canada and Mexico. In reality its purpose is clear and it is the recalcitrant positions of Canada and Mexico and the failure of previous administrations since Clinton-Bush-Obama to act forcefully in the face of such an attitude that was the problem. Of what amounts to indifference from Canada and Mexico to fentanyl flows  and the destroying of America, that made it imperative for America to use all the powers at its disposal to get action to stop fentanyl and migrants. 

These powers at America's disposal include economic power tariffs being one, and other powers as necessary, as no nation can long endure such indifferent attitudes to harm done against another for long.

It is a lesson for America that what TR called carrying a big stick can be a problem when there is the complete opposite taking place.