If passed, the Protecting the Right to Organize (PRO) Act would establish "right-to-work" laws in states that don't already have them and make it legal for all state government employees. What is the main purpose of the PRO Act?
1) To establish "right-to-work" laws in all states
2) To make it legal for all state government employees
3) To protect the rights of workers to organize
4) To regulate labor unions