Earlier quoted context omitted.
> One day we will have one big union. The strength of labor unions in Europe is drawn in large part due to the fact that there are a multiplicity of unions representing workers for the same companies, and workers can choose who they want to represent them. That's not the case for labor unions in the US.
That's not the case because the US Government and industry has spent the last 150 years crushing unions and weakening them. Anti-union propaganda is rampant. It could be the case in the US. Having a single union is a good place to start.
No, it's actually because the government gave them more power and allowed agreements to be structured where all of the electricians in one company must come from the same union.
Unions in the US are able to prevent competition from other unions. You can not freely choose different unions if you don't like the one in your company. See every state that doesn't allow "right to work". Unions become mandatory.