Depends on your viewpoint. An effective Union in principle post Taft-Hartley is essentially an organized crime organization, seeing as the most effective method of forcing Big Industry to the negotiating table, secondary strikes, were made illegal to organize as a formal Union.

Without the amplifying power of network effects to offset Industy's increased cash reserves to simply wait out the miniscule by comparison reserves of a legal Union, there really is no serious incentive to get Industry actors to really pay attention. Thus is the danger of legislation without sunset dates.

Can't comment on ACLU. Haven't kept up with them nowadays.