<prompt> Translate the following text to EnglishKodi ya thamani ya 0.125 ni kodi ya thamani ya 0.125 inayowekwa juu ya mizigo ya kibiashara iliyopakiwa na kutolewa katika bandari maalum za Marekani zilizo wazi kwa usafiri wa umma.  <response>: It is an ad valorem tax of 0.125 percent imposed on commercial cargo loaded and unloaded at specified U.S. ports open to public navigation. 