I tell you what... name one place in this country where joining a union is a condition of employment. You can't do it because "Closed Shops" were outlawed by the Taft-Hartley Act way back in the 1940s. There are many places  where  employees who choose not to join a union are required to pay a fee to the union for the services the union is required to provide for them by law, such as bargaining for them and defending their rights under the union contract. This is called a Union Shop, and it is nothing more than good old American capitalism at work. You get a service, you pay for it.

Right to work states do not provide freedom to employees. They provide the freedom to exploit workers to employers because they do not require employers to collectively bargain with unions. Right to work states do not have collective bargaining; rather they have collective begging.