my2cents,
"A union under U.S. labor law is not a free association"
Actually, it is. Noone is forced to join a union, there are plenty of non-union jobs out there. There are, however, plenty of good reasons why people would rather work in a union job, higher pay and better benefits being the most obvious ones. Look at any sector of industry and compare the compensation at union vs non-union jobs. Now answer me this, why are the union workers uniformly higher paid and better taken care of? I'll give you a hint, its not because the companies they work for are philanthropists. Your statements about "compulsory unionism" and "tyranny" are simply nonsense. Saddam Hussein is a tyrant, James Hoffa is not even close. It's clear you need go read some labor history in order to gain a basic understanding of how unions came to exist, and why they are still relevant and necesary at large blue collar companies like UPS.