[georgefox]

The concept you're talking about is the so-called "right-to-work law" (http://en.wikipedia.org/wiki/Right-to-work_law). The problem seems to be exactly what jiggy mentions: it's much cheaper not to join the union, and you still enjoy at least some of the benefits of the collective bargaining. The reality seems to be that right-to-work states have weaker unions, lower pay, and lousier benefits than non-right-to-work states. Whether this is directly related to right-to-work laws or not is not entirely clear, but there's no evidence to suggest that right-to-work actually makes unions stronger or better for their members.

In terms of "making the union managers work for their jobs," is that really a problem right now? I haven't often heard arguments suggesting unions are just collecting dues and doing nothing. Generally the only anti-union argument I've heard is that unions are too powerful and their members have overly generous compensation.