that no bill of attainder or ex post facto law shall be passed, or that which provides for an equality of taxation according to the census, or the clause declaring that all duties shall be uniform throughout the United States, or the important provision that the trial of all crimes shall be by jury.  These several articles and clauses of the Constitution, all resting on the same authority, must stand or fall together.  Some objections have been urged against the details of the act for the return of fugitives from labor, but it is worthy of remark that the main opposition is aimed against the Constitution itself, and proceeds from persons and classes of persons many of whom declare their wish to see that Constitution overturned.  They avow their hostility to any law which shall give full and practical effect to this requirement of the Constitution.  Fortunately, the number of these persons is comparatively small, and is believed to be daily diminishing; but the issue which they present is one which involves the supremacy and even the existence of the Constitution.

Cases have heretofore arisen in which individuals have denied the binding authority of acts of Congress, and even States have proposed to nullify such acts upon the ground that the Constitution was the supreme law of the land, and that those acts of Congress were repugnant to that instrument; but nullification is now aimed not so much against particular laws as being inconsistent with the Constitution as against the Constitution itself, and it is not to be disguised that a spirit exists, and has been actively at work, to rend asunder this Union, which is our cherished inheritance from our Revolutionary fathers.

In my last annual message I stated that I considered the series of measures which had been adopted at the previous session in reference to the agitation growing out of the Territorial and slavery questions as a final settlement in principle and substance of the dangerous and exciting subjects which they embraced, and I recommended adherence to the adjustment established by those measures until time and experience should demonstrate the necessity of further legislation to guard against evasion or abuse.  I was not induced to make this recommendation because I thought those measures perfect, for no human legislation can be perfect.  Wide differences and jarring opinions can only be reconciled by yielding something on all sides, and this result had been reached after an angry conflict of many months, in which one part of the country was arrayed against another, and violent convulsion seemed to be imminent.  Looking at the interests of the whole country, I felt it to be my duty to seize upon this compromise as the best that could be obtained amid conflicting interests and to insist upon it as a final settlement, to be adhered to by all who value the peace and welfare of the country.  A year has now elapsed since that recommendation was made.  To that recommendation I still adhere, and