State preemption occurs when the state passes a law that supersedes local authority. As a “Home Rule” state, Florida grants counties and municipalities the authority to self-govern. This is beneficial as local governments are often more familiar with their community and constituents' needs. However, the State has authorized a series of preemptions relating to environmental matters, undermining municipal "Home Rule." The state of Florida has preempted plastic bag bans, polystyrene (styrofoam) bans, and most recently has made moves to preempt bans on sunscreens that are not "reef-safe."