<prompt> Translate the following text to EnglishKatika utafiti huu, tulifanya utafiti wa kina na kutambua mashirika matatu ya shirikisho, serikali tatu za majimbo, nchi tatu za kigeni, na makampuni matatu ya sekta binafsi ambayo yalichukua hatua ambazo waliona kuwa na ufanisi katika kupunguza malipo yasiyofaa katika programu zao.  <response>: In performing this study, we conducted extensive research and identified three federal agencies, three state governments, three foreign countries, and three private sector companies that took actions that they considered effective in reducing improper payments in their programs. 