"While Donald Trump has promised to “make America great again” by attacking trade deficits,......"

This is not correct.  I don't think he ever said it was the trade deficit he wanted to tackle.  It was the trade itself.  He has proposed punitive tariffs on imports and threatened to shame companies who want to move out of the USA.  He's also said he would label China a currency manipulator, which is a lever they use to help make their exports more competitive worldwide.  

Job losses in North America due to global trade have most certainly occurred.  Some entire industries, like clothing manufacturing have been wiped out.  But who is to blame for that?  Take a look in your closet and count the number of labels saying "Made in Canada".