From the Document: "Fiscal policy is the means by which the government adjusts its budget balance through spending and revenue changes to influence broader economic conditions. According to mainstream economics, the government can affect the level of economic activity--generally measured by gross domestic product (GDP)--in the short term by changing its levels of spending and tax revenue. This In Focus presents an introduction to fiscal policy."
CRS In Focus, IF11253
Congressional Research Service: https://crsreports.congress.gov/