In the US it's set at the state and city levels. It varies so widely from city to city that unless you're a resident you'd never notice a change. The changes a

In the US it's set at the state and city levels. It varies so widely from city to city that unless you're a resident you'd never notice a change. The changes are frequent, too. Since they're so localized, they're often heavily involved in local politics. Recently my city was very divided over a half-cent tax hike to build a better high school.