I'm assigning blame to the greedy corporations. If consumers have $100 to spend on an item, corporations can either make it domestically for $90, or move production overseas and make it for $80. The consumer is going to pay $100 in either scenario. Lowering the tariffs ensured that the products would be made overseas so the executives can profit on the slave labor.

I'm not attempting to assign blame to one political party or another. Reasonable tariffs to protect domestic labor should be a bi-partisan issue.