Veteran labor journalist (and DSA member) Robert Fitch has an excellent article called "Card Check: Labor's Charlie Brown Moment?" in the latest issue of the always excellent New Politics. He raises the big and uncomfortable questions that most leftists and laborites are typically unwilling to ask about the all too ineffectual American labor movement and the role of the labor Left within it. He also makes (in my view) a very effective case that the Employee Free Choice Act would not be the panacea that many of its supporters seem to think it would be.
Fitch doesn't offer too much in the way of specific solutions, but these are the kinds of questions that should be in the minds of all leftists in and around the labor movement.