<prompt> Translate the following text to SwahiliOn July 18, 2001, the Comptroller General issued a letter to the Vice President in his capacity as Chair of the NEPDG, under 31 U.S.C.  <response>: Mnamo Julai 18, 2001, Msimamizi Mkuu wa Serikali ya Marekani alimtumia Makamu wa Rais wa Marekani, katika nafasi yake kama Mwenyekiti wa NEPDG, barua ya kuwakilisha Marekani. 