In a speech before the U.S.  Senate, in 1836, he declared the power of Congress to abolish slavery in the District “unquestionable.”  Messrs. Blair, of Tennessee, and Chilton, Lyon, and R.M.  Johnson, of Kentucky, A.H.  Shepperd, of N.C., Messrs. Armstrong and Smyth of Va., Messrs. Dorsey, Archer, and Barney, of Md., and Johns, of Del., with numerous others from slave states have asserted the power of Congress to abolish slavery in the District.  In the speech of Mr. Smyth, of Virginia, on the Missouri question, January 28, 1820, he says on this point:  “If the future freedom of the blacks is your real object, and not a mere pretence, why do you begin here?  Within the ten miles square, you have undoubted power to exercise exclusive legislation. Produce a bill to emancipate the slaves in the District of Columbia, or, if you prefer it, to emancipate those born hereafter.”

To this may be added the testimony of the present Vice President of the United States, Hon. Richard M. Johnson, of Kentucky.  In a speech before the U.S.  Senate, February 1, 1820, (National Intelligencer, April 29, 1829,) he says:  “In the District of Columbia, containing a population of 30,000 souls, and probably as many slaves as the whole territory of Missouri, THE POWER OF PROVIDING FOR THEIR EMANCIPATION RESTS WITH CONGRESS ALONE.  Why then, this heart-rending sympathy for the slaves of Missouri, and this cold insensibility, this eternal apathy, towards the slaves in the District of Columbia?”

It is quite unnecessary to add, that the most distinguished northern statesmen of both political parties, have always affirmed the power of Congress to abolish slavery in the District.  President Van Buren in his letter of March 6, 1836, to a committee of Gentlemen in North Carolina, says, “I would not, from the light now before me, feel myself safe in pronouncing that Congress does not possess the power of abolishing slavery in the District of Columbia.”  This declaration of the President is consistent with his avowed sentiments touching the Missouri question, on which he coincided with such men as Daniel D. Thompkins, De Witt Clinton, and others, whose names are a host.[A] It is consistent, also with his recommendation in his last message, in which speaking of the District, he strongly urges upon Congress “a thorough and careful revision of its local government,” speaks of the “entire independence” of the people of the District “upon Congress,” recommends that a “uniform system of local government” be adopted, and adds, that “although it was selected as the seat of the General Government, the site of its public edifices, the depository of its archives, and the residences of officers intrusted with large amounts of public property, and the management of public business, yet it never has been subjected to, or received, that special and comprehensive legislation which these circumstances peculiarly demanded.”