After discriminating, therefore, in theory, the several classes of power, as they may in their nature be legislative, executive, or judiciary, the next and most difficult task is to provide some practical security for each, against the invasion of the others.
What this security ought to be, is the great problem to be solved. Will it be sufficient to mark, with precision, the boundaries of these departments, in the constitution of the government, and to trust to these parchment barriers against the encroaching spirit of power? This is the security which appears to have been principally relied on by the compilers of most of the American constitutions. But experience assures us, that the efficacy of the provision has been greatly overrated; and that some more adequate defense is indispensably necessary for the more feeble, against the more powerful, members of the government. The legislative department is everywhere extending the sphere of its activity, and drawing all power into its impetuous vortex. The founders of our republics have so much merit for the wisdom which they have displayed, that no task can be less pleasing than that of pointing out the errors into which they have fallen. A respect for truth, however, obliges us to remark, that they seem never for a moment to have turned their eyes from the danger to liberty from the overgrown and all-grasping prerogative of an hereditary magistrate, supported and fortified by an hereditary branch of the legislative authority. They seem never to have recollected the danger from legislative usurpations, which, by assembling all power in the same hands, must lead to the same tyranny as is threatened by executive usurpations. In a government where numerous and extensive prerogatives are placed in the hands of an hereditary monarch, the executive department is very justly regarded as the source of danger, and watched with all the jealousy which a zeal for liberty ought to inspire. In a democracy, where a multitude of people exercise in person the legislative functions, and are continually exposed, by their incapacity for regular deliberation and concerted measures, to the ambitious intrigues of their executive magistrates, tyranny may well be apprehended, on some favorable emergency, to start up in the same quarter. But in a representative republic, where the executive magistracy is carefully limited; both in the extent and the duration of its power; and where the legislative power is exercised by an assembly, which is inspired, by a supposed influence over the people, with an intrepid confidence in its own strength; which is sufficiently numerous to feel all the passions which actuate a multitude, yet not so numerous as to be incapable of pursuing the objects of its passions, by means which reason prescribes; it is against the enterprising ambition of this department that the people ought to indulge all their jealousy and exhaust all their precautions. The legislative department derives a superiority in our governments from other circumstances. Its constitutional powers being at once more extensive, and less susceptible of precise limits, it can, with the greater facility, mask, under complicated and indirect measures, the encroachments which it makes on the co-ordinate departments. It is not unfrequently a question of real nicety in legislative bodies, whether the operation of a particular measure will, or will not, extend beyond the legislative sphere.
On the other side, the executive power being restrained within a narrower compass, and being more simple in its nature, and the judiciary being described by landmarks still less uncertain, projects of usurpation by either of these departments would immediately betray and defeat themselves [don't laugh, he really wrote this]. Nor is this all: as the legislative department alone has access to the pockets of the people, and has in some constitutions full discretion, and in all a prevailing influence, over the pecuniary rewards of those who fill the other departments, a dependence is thus created in the latter, which gives still greater facility to encroachments of the former. I have appealed to our own experience for the truth of what I advance on this subject. ...
The conclusion which I am warranted in drawing from these observations is, that a mere demarcation on parchment of the constitutional limits of the several departments, is not a sufficient guard against those encroachments which lead to a tyrannical concentration of all the powers of government in the same hands.
-- James Madison, 1788 (Federalist 48, emphases added)
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Repeal the 17th Amendment.
