Cato Institute
Policy Analysis
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Page 7
prets and applies the law.  Often the relations among the
three branches of government are cordial and they cooper-
ate with one another, but sometimes they clash.  Under a
system of separate and coordinate powers, however, each
branch is expected to remain within its sphere and to
respect the powers that the Constitution has assigned to
the other branches.  Acrimonious disagreements were expect-
ed, of course; encroachment, on the other hand, was pro-
scribed because the usurper would essentially be declaring
itself above the fundamental law of the Constitution.
To illustrate the potentially disastrous consequences
of encroachment or usurpation in criminal cases, it will
be useful to consider a few examples in which one branch
of government blatantly disregards the separation-of-powers
principle.  Police officers would be acting outside their
sphere, for example, if they were to execute prisoners on
the basis of their own assessment of the evidence.  Even
if California state authorities had acquired ironclad proof
that Charles Manson and his cohorts were killers, summary
executions would have been unconstitutional.  The U.S.
Constitution expects executive officers to present their
evidence in court and to respect judicial processes.
The legislature cannot bypass the judicial branch.
Any law that called for the immediate arrest and execution
of certain citizens would be null and void because of the
Constitution's prohibition of bills of attainder and its
requirement that citizens be given an opportunity to
defend themselves.9   Even if Congress had unanimously
passed a resolution declaring Julius and Ethel Rosenberg
guilty of espionage in 1950, the couple would still have
had the right to a trial by a jury in a court of law.
The separation-of-powers doctrine also applies to the
judiciary.  If a judge were to order prosecutors to file
criminal indictments against certain citizens, for example,
he would be acting outside the judicial sphere.  The power
to prosecute is an executive power that cannot be assumed
by any judge or judicial officer.10
Modern academics sometimes disparage the Framers' idea
of checks and balances as a formula for "gridlock," but
such criticism misses the point.  The primary purpose of
the Constitution is to safeguard the freedom of the
American people, not to facilitate government programs or
operations.  As Judge Frank Easterbrook has noted,
"Separation of powers--the inability of any one person or
branch to have its way--was thought to be an essential
component of a free Republic, not a hindrance to good gov-
ernment."11