[MrB]

I can’t think where they’d be unconstitutional,

but they definitely are inherently a conflict of interest to the detriment of the people of the USA.

[cripplecreek]

Public service unions are in a position to enforce their will through force and coercion.

Cop Union Boss Boasts of Beating Lawmakers With Flashlights: If Soldiers Don’t Have Unions, Why Do Police and Teachers? (Story from 2011)

"We intend to walk into Lansing after the summer break and ask the Republicans who have been so eagerly screwing us, 'who's next?' If we cannot earn their respect we will do what we have always done; hit it with a flashlight until we gain compliance."