The federal budget is a central component of the congressional “power of the purse.” Each fiscal year, Congress and the President engage in a number of activities that influence short- and long-run revenue and expenditure trends. This report offers context for the current budget debate and tracks legislative events related to the federal budget. …. Trends resulting from current federal fiscal policies are generally thought by economists to be unsustainable in the long term. Projections suggest that achieving a sustainable long-term trajectory for the federal budget would require deficit reduction. Reductions in deficits could be accomplished through revenue increases, spending reductions, or some combination of the two. ….