When something like universal healthcare or a $15 min wage goes into law, it's one less thing the union has to negotiate for. The union doesn't have to give up

When something like universal healthcare or a $15 min wage goes into law, it's one less thing the union has to negotiate for. The union doesn't have to give up a certain number of sick days to make sure workers are getting $15/hr because its now non-negotiable. The end goal of a union is to not to need to exist, that workers are protected enough that they don't have to engage in collective bargaining.