This is why it's a feature that the original design of the US was a loose federation of independent states, with an intentionally very weak and restricted federal government. States are free to try different modes of governance and different levels of regulation, different levels of pro-employer or pro-employee legislation, etc. Ideally other states see what works and adopt the better models over time, and continue experimentation. For whatever reason though states seem very reluctant to take the stuff that is obviously working in another state and apply it at home, particularly when what is obviously working is the opposite of their system which isn't.