<prompt> Translate the following text to EnglishTume iliamua karibu miaka ishirini iliyopita kuwa kulikuwa na haja ya sheria maalum ili kuwezesha maombi ya Ujumbe wa Posta ya Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe wa Ujumbe.  <response>: The Commission determined almost twenty years ago that there was a need for specialized rules to facilitate Postal Service mail classification requests involving proposed new services, or changes in existing services, that were intended to serve as experiments. 