Well, that depends on the union. American unions are pretty flush with cash. I can attest to that, as a former steward (retired). Most members are members by default (mandatory) and dues are automatically withdrawn, as a condition of employment. Authoritarian-run countries are not going to allow unions for the betterment of the workers. If they have a union, they want a cut of the money. There are much better ways to help the poor here and abroad.