Don't see Social Security or Medicare/Medicaid, either.
The chart deliberately leaves them out, because of course, in some people's minds, "Congress has no control" over these.
The circle for mandatory spending would be 1.3 times the size of that center circle for discretionary spending (in 2004).
Any discussion of budget that leaves these items out is worthless, particularly since entitlements not only involve current expenses, but a promise that extends for decades into the future.