<prompt> Translate the following text to EnglishSera ya Fedha ya Shirikisho inaathirije akiba ya kitaifa, ni sera gani za shirikisho ambazo zimekusudiwa kuongeza akiba ya kibinafsi, na jinsi gani mageuzi ya Usalama wa Jamii na Medicare yatakuwa na athari kwa akiba ya kitaifa?  <response>: 4 How does federal fiscal policy affect national saving, what federal policies have been aimed at increasing private saving, and how would Social Security and Medicare reform affect national saving? 