In spite of the trend toward tipping as obligatory behavior, six states, mainly in the South, passed laws that made tipping illegal. Enforcement of anti-tipping laws was problematic. The earliest of these laws was passed in 1909 (Washington), and the last of these laws was repealed in 1926 (Mississippi). Some have argued that "The original workers that were not paid anything by their employers were newly freed slaves" and that "This whole concept of not paying them anything and letting them live on tips carried over from slavery."