Leftists such the Liberals and Progressives often whine, bleat, and/or rant about how the corporations are destroying America and how the labor unions are the heroes of the people.
These Leftists, however, either conveniently forget or willfully ignore the very simple fact that politically, legally, and pragmatically labor unions are corporations as well.
Worse in many ways, labor unions are de facto privately held corporations which allows them to circumvent many regulations and form of oversight that burden and control corporations that are publicly traded.
The only significant current difference between a labor union and what are normally thought of as corporations is that labor unions are often legally allowed to compel individuals to purchase their services, i.e., join the union and pay dues to it.
This is a current difference subject to change. In the event that the SCOTUS finds ObamaCare’s Individual Mandate constitutional, the precedence will be set for other compulsory purchases.
Labor Unions even have huge “holding companies,” each with a plethora of business units and wholly owned subsidiaries; the AFL-CIO, UAW, SEIU, and the USW are examples of such.
And yes, all the same laws regarding “hard money” and “soft money” political contributions, Issue Advocacy Ads, and Bundling apply exactly the same to both labor unions and what are normally thought of as corporations. The sole difference being that labor unions can compel their clients, the workers, to contribute to such.
In essence, Americans can agree with the Liberals and Progressives when they say that corporations are destroying America. We just disagree with them on which corporations are doing so.