Collusion is done behind the back and is a close cousin to conspiracy
Nefarious comes to mind.
Negotiating is what unions do.... Offers, counter offers, agreement.
Do you pay sticker price for a car? We call it "making a deal".
If you don't want my deal you find someone who does.
The public unions set the sticker price. The politicians then must decide, do I take the deal and the votes that go with it, or do I do what is best for the taxpayers.
The trouble is that the politicians do not have the guts to refuse the deal. They know what will happen if they do. Their only option is to blame the person asking for the dollars and to hope no one notices that they themselves had the powder to say no during the negotiations.
Its like suing McDonald's for being fat. That is much easier than admitting your inability to say no.
Michael