<prompt> Translate the following text to EnglishZaidi ya kupima jinsi pendekezo lingekuwa na athari kwa bajeti ya shirikisho na uchumi, watunga sera wanahitaji kuzingatia usawa uliofanywa kati ya malengo mawili ya upendeleo wa mapato kiwango na uhakika wa faida na usawa wa mtu binafsi kiwango cha kurudi kwa michango ya mtu binafsi.  <response>: Beyond weighing how a proposal would affect the federal budget and the economy, policymakers need to consider the balance struck between the twin goals of income adequacy level and certainty of benefits and individual equity rates of return on individual contributions. 