<prompt> Translate the following text to EnglishHata tukidhani, kwa mfano, kwamba Bunge na Rais wanashikilia lengo la mara kwa mara la kuokoa ziada ya usalama wa kijamii, mfano wetu wa muda mrefu unaonyesha ulimwengu wa 2030 ambapo programu hizi tatu peke yake zitahitaji karibu robo tatu ya mapato ya jumla ya serikali.  <response>: Even assuming, for example, that the Congress and the President adhere to the oftenstated goal of saving the Social Security surpluses, our longterm model shows a world by 2030 in which these three programs alone would require almost threequarters of total federal revenue. 