In a setback for public sector unions, the U.S. Supreme Court ruled Monday in another 5-to-4 decision that thousands of home healthcare workers in Illinois do not need to pay fees to cover the costs of union bargaining. The court found requiring the workers to pay union costs violated their First Amendment rights. The decision does not affect private workers and leaves intact a precedent requiring public employees, like teachers, to pay union fees. Instead the justices considered the healthcare workers separately as “partial-public employees,” who work for individual patients but are paid by the state.