I honestly wonder (without knowing much of the history mind you) if the USA purposely made unions awful as to promote the mindset "I would rather not have a uni

I honestly wonder (without knowing much of the history mind you) if the USA purposely made unions awful as to promote the mindset "I would rather not have a union" amongst the workers. For sure unions are terrible here, but it seems quite strange to have anti-competitive laws for unions when the USA is near-built on capitalism and the free market.