End game for people like McConnell is that it puts downwards pressure on unions. A bankruptcy if a law is passed actually allowing states to go bankrupt would be a process overseen by federal courts, many of which are chaired by Trump appointed judges now. The judge gets to decide which debts are paid, meaning that pensions are very likely going to be chopped, hurting union members. There are other reasons.

Bottom line is that they want rich people (their primary donors) to get richer and don't care about poor or middle class. They are very open about it now and still somehow supported.

This is a good read on it:

https://www.theatlantic.com/ideas/archive/2020/04/why-mitch-...