Congress and the Budget: 2016 Actions and Events. Congressional Research Service, Library of Congress. Grant A. Driessen and Megan S. Lynch. October 17, 2016
The Constitution grants Congress the power of the purse, but does not dictate how Congress must fulfill this constitutional duty. Congress has, therefore, developed certain types of budgetary legislation, along with rules and practices that govern its content and consideration. This set of budgetary legislation, rules, and practices is often referred to as the congressional budget process.
There is no prescribed congressional budget process that must be strictly followed each year, and Congress does not always consider budgetary measures in a linear or predictable pattern. Such dissimilarity can be the result of countless factors, such as a lack of consensus, competing budgetary priorities, the economy, natural disasters, military engagements, and other circumstances creating complications, obstacles, and interruptions within the policymaking process.
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