Final answer:
Right-to-work laws derived from the Taft-Hartley Act of 1947 do not prohibit public sector unions but allow employees to opt out of joining a union. These laws challenged the union climate but did not ban unions, including those for teachers. Unions maintain the legal right to exist and engage in collective bargaining.
Step-by-step explanation:
false - Right-to-work laws do not ban the formation of public sector unions, including teachers' unions. Right-to-work laws, stemming from the Taft-Hartley Act of 1947, allow employees to work without being compelled to join a union. While these laws have made the legal climate less encouraging for union formation, they do not prohibit the existence or formation of public sector unions, such as teachers' unions.
Even after the passage of Taft-Hartley, employees, including public sector workers, maintain the right to form unions, though these laws do permit states to limit how unions operate and collect dues. Figures like John L. Lewis fought to expand workers' rights to unionize, and despite propositions by officials to limit collective bargaining, as illustrated in historical protests in Wisconsin, public sector unions still legally exist and operate today.