In your 12/16/12 discussion of "right to work" laws, you said that business owners should have the right to refuse to hire union members (or to fire them). How would that work for government employees? In a free society, could legislators (or departments) forbid government workers from being union members? Could they require union membership? Might unions serve some functions -- like providing insurance and other benefits to members -- but not engage in collective bargaining over wages or benefits?