They used the principles of separation of powers and federalism to secure liberty in the fundamental political sense of the term, quite in addition to the idea of freedom from intrusive governmental acts. The idea and the promise were that when the people delegate some degree of control to a remote central authority, one branch of government ought not possess the power to shape their destiny without a sufficient check from the other two. In this vision, liberty demands limits on the ability of any one branch to influence basic political decisions. The Federalist No. 47, supra, at 303. It follows that if a citizen who is taxed has the measure of the tax or the decision to spend determined by the Executive alone, without adequate control by the citizen's Representatives in Congress, liberty is threatened.
Money is the instrument of policy and policy affects the lives of citizens.
The individual loses liberty in a real sense if that instrument is not subject to traditional constitutional constraints. The principal object of the statute, it is true, was not to enhance the President's power to reward one group and punish another, to help one set of taxpayers and hurt another, to favor one State and ignore another. Yet these are its undeniable effects. The law establishes a new mechanism which gives the President the sole ability to hurt a group that is a visible target, in order to disfavor the group or to extract further concessions from Congress. The law is the functional equivalent of a line item veto and enhances the President's powers beyond what the Framers would have endorsed.