Look at what public sector unions have done in the US - they protect the work and harm the citizen. They fight school choice, fight to keep terrible laws, protect police from any accountability, and that doesn't even begin to describe the damage they're doing the civic finances through unfunded pension liabilities.
Sorry? you blame the union for the unfunded pension liability?
How can that be the unions fault?
I'm not in America, I can't speak to what influence the union has in the civil service. This is simply not my experience of unions in Britain or Australia. The reverse in fact.