objection, this
one alone rendered the support of that instrument incompatible with
the duties which men owe to their Creator, and to each other. It was
the poisonous infusion in the cup, which, though constituting but a
very slight portion of its contents, perilled the life of every one
who partook of it.

If it be asked to what purpose are these animadversions, since the
clause alluded to has long since expired by its own limitation--we
answer, that, if at any time the foreign slave trade could be
_constitutionally_ prosecuted, it may yet be renewed, under the
Constitution, at the pleasure of Congress, whose prohibitory statute
is liable to be reversed at any moment, in the frenzy of Southern
opposition to emancipation. It is ignorantly supposed that the
bargain was, that the traffic _should cease_ in 1808; but the only
thing secured by it was, the _right_ of Congress (not any obligation)
to prohibit it at that period. If, therefore, Congress had not
chosen to exercise that right, _the traffic might have been
prolonged indefinitely, under the Constitution_. The right to
destroy any particular branch of commerce, implies the right to
re-establish it. True, there is no probability that the African slave
trade will ever again be legalized by the national government; but
no credit is due the framers of the Constitution on this ground; for,
while they threw around it all the sanction and protection of the
national character and power for twenty years, _they set no bounds to
its continuance by any positive constitutional prohibition_.

Again, the adoption of such a clause, and the faithful execution of
it, prove what was meant by the words of the preamble--"to form a
more perfect union, establish justice, insure domestic tranquillity,
provide for the common defence, promote the general welfare, and
secure the blessings of liberty to ourselves and our
posterity"--namely, that the parties to the Constitution regarded
only their own rights and interests, and never intended that its
language should be so interpreted as to interfere with slavery, or to
make it unlawful for one portion of the people to enslave another,
_without an express alteration in that instrument, in the manner
therein set forth_. While, therefore, the Constitution remains as it
was originally adopted, they who swear to support it are bound to
comply with all its provisions, as a matter of allegiance. For it
avails nothing to say, that some of those provi