Teachers' unions are changing their tactics to maintain 'political clout' and salvage potential losses...Their new message? Anyone can join the union. A new membership category called “Community Allies,” open to “any person who demonstrates support in advancing the cause of public education.” It is of dubious legality, as unions are created to represent employees in a certain field, not to wield political influence. Yet, if this plan succeeds, the National Educators Association will be able to solicit these new “members” for PAC donations, a fact that could extend their political reach even further beyond where it is now. The National...