How about "with the rapid ascent and descent of tariffs against trade partners and allies heretofore unseen in their magnitude, as well as the frequent changes in directions to those tariffs - seeming to use them as threats - again, to our allies and trade partners", the United States has changed its behavior in a way that most people would see as untrustworthy (and if they were a friend or dating partner, most would recommend a temporary cutoff)?
Does that sound less "partisan"?