Definition of Mandatory Spending
What is "mandatory spending"? What is the definition of the term "mandatory spending"?
"Mandatory spending" is government expenditures that are "automatically obligated by virtue of previously-enacted laws".
This compares to "discretionary spending", which is spending that is set on a yearly basis by Congress.

-Social Security
-Medicare
-Interest on National Debt
-Medicaid and the State Children's Health Insurance Program
"Mandatory spending" makes up the majority of US government expenditures.
--
Davemanuel.com Articles That Mention Mandatory Spending:
CBO: Interest Charges To Cost United States $4.8 Trillion Per Year By 2055
United States Posts $587 Billion Deficit in FY2016
Donald Trump: I'd Eliminate National Debt In Eight Years
What is Sequestration?
CBO: Net Interest To Total $5.41 Trillion Over Next Ten Years