<prompt> Translate the following text to EnglishMfumo ambao ndani yake masuala haya itakuwa kuchukuliwa ni mfumo wa sasa wa Marekani posta, kuhusu ambayo mwandishi anajua kidogo.  <response>: The framework within which these issues will be considered is the existing United States postal system, about which the author knows a little. 