2 U.S.C. § 621

(1)

to assure effective congressional control over the budgetary process;

(2)

to provide for the congressional determination each year of the appropriate level of Federal revenues and expenditures;

(3)

to provide a system of impoundment control;

(4)

to establish national budget priorities; and

(5)

to provide for the furnishing of information by the executive branch in a manner that will assist the Congress in discharging its duties.