More specifically they finance spending of many types to promote the general welfare, provide for the common defense, and ensure domestic  national defense, a judicial system, aid to the elderly, construction of infrastructure, education and training, and so forth.
some of these types of spending that are financed are more useful than others.
mnli hypothesis: some of these types of spending that are financed are more useful than others. premise: More specifically they finance spending of many types to promote the general welfare, provide for the common defense, and ensure domestic  national defense, a judicial system, aid to the elderly, construction of infrastructure, education and training, and so forth.