Union Executives have a constituency, and more power too them. There obviously are no easy answers.
But one legitimate concern that I see all too many of us on the labor side tend to simply gloss over is how playing to the "us against them" strategy of big business serves to ultimately benefit mega-capital/multi-nationals at the expense of labor everywhere, including in the U.S..
To be truly effective don't we have to have Chinese workers, and Japanese workers, and U.S. workers, and Mexican workers, and German workers, etc. all speaking strongly with one voice? Big business has employed the divide and conquer strategy to open up opportunities that ultimately benefit only big business (and occasionally leads to wide spread death and destruction, since money has no conscience and business leaders never taste war) and will never stray from that tried and true profit maker unless and until forced to do so. That means they need to face a united global workforce, one that leaves no room for exploitation, and that will never happen as long as our labor strategy is, essentially, to tell our brothers and sisters around the planet that there just isn't enough to go around, and we intend to hang on to what we have even if it means looking them square in the eye while they starve to death.
Somehow I keep hoping for the ultimate union organizer to come on the scene and get the train to everywhere back on the track.