“This measure violates the principles of responsible state budgeting; provides a special, self-serving exemption from budget review to the legislative leaders; tests the limits of constitutionality; received no public review or consideration prior to enactment; and was motivated by power politics rather than public service.”

http://www.illinoispolicy.org/bad-blood-makes-for-bad-policy-in-general-assemblys-budget-exemption/