This post by Mark Perry is an important one; It needs to be repeated over and over again so that the myth that claims manufacturing in the U.S. has been waning or destroyed completely is finally debunked:
Workers today produce twice as much manufacturing output as their counterparts did in the early 1990s, and three times as much as in the early 1980s, thanks to innovation and advances in technology that have made today’s workers the most productive in history.
And that's American workers. Manufacturing employment is down but manufacturing productivity is at all time highs, folks. Let's keep it real.