While I don't think they can hurt, trade trips are more about photo-ops than they are bringing enough jobs in to make a difference. Lest we forget, Kilpatrick was hopping all over the UAE and Middle East, and Granholm went all around the world. Her's often yielded investment back home, but so little as for it to just be a drop in the bucket., even in the long-term. What Bing is currently doing seems to be more than adequate if you ask me. All of the tools are already in use; all he needs to do is to keep improving the credibility of city government, and so long as the business community knows that they are dealing with fair dealers and honest brokers, they'll give Detroit a look-see like they have been doing.