At the risk of turning this from a vanity post into a discussion about politics . . .
If a union is a voluntary association, then there is no reason to be against it. I am opposed to anti-monopoly legislation as well. Businesses should be permitted to co-operate in order to create efficiencies of network, of scale, and of scope. Malefactors should be punished by market mechanisms, not by politicians, who are, just coincidentally, accepting protection money from industrial competitors. See U.S. vs. Microsoft.
And if businesses should be allowed to act collectively, then so should workers. And, again, if they are not prudent, they will end up being punished by market mechanisms. Look at the UAW as an example of what happens when you kill the goose that lays the golden eggs.
All power to the producers!