Free Trade deals are notoriously complicated which is why they are always straight up or down votes in Congress. Usually friendly to consumers, they have hurt workers in some job sectors and helped those in others. The transitions caused by NAFTA were horribly managed, a situation Obama inherited, and Congress for different reasons will not fix. From what I have read the pacific trade treaty being negotiated, which does not involve China and in fact creates a trade bloc to counter China, has great benefits for the US and few negatives. It needs to be judged on its own and not turned into mindless hyperbole and campaign slogans.