For most of the past year, it appeared that trade deals would be negotiated between virtually all the major trading blocks. Yet within the space of a few weeks, it looks that even those that were agreed but not ratified look shaky. What has happened?Elections are fought on a mix of policy promises that are frequently not implemented, personal charisma, and a huge effort by candidates to demonstrate that they can be trusted. Both Trump and Clinton alienate many voters, but one area of policy on which they seem to be outbidding each other is a protectionism policy to defend US jobs.