In 1820, the New-York Legislature instructed the representatives from that state in Congress, to insist on making "the prohibition of slavery an indispensable condition of admission" of certain territories into the union. In 1828, the Legislature of Pennsylvania instructed the Pennsylvania members of Congress, to vote for the abolition of slavery in the district of Columbia. In vain hereafter shall a representative present the instructions of his constituents, or the injunctions of a sovereign state. No question shall be taken, or any motion he may offer, in _any way_, or to _any extent_, relating to slavery! Search the annals of legislation, and you will find no precedent for such a profligate act of tyranny, exercised by a majority over their fellow legislators, nor for such an impudent contempt of the rights of the people. But this resolution is no less barbarous than it is profligate and impudent. Remember, fellow countrymen! that the decree has gone forth, that there shall be no legislation by Congress, _in any way_, or to _any extent whatever_, on the subject of slavery. Now call to mind, that Congress is the local and only legislature of the District of Columbia, which is placed by the Constitution under its "exclusive jurisdiction _in all cases whatsoever_." In this District, there are thousands of human beings divested of the rights of humanity, and subjected to a negotiable despotism; and Congress is the only power that can extend the shield of law to protect them from cruelty and abuse; and that shield, it is now resolved, shall not be extended in any way, or to any extent! But this is not all. The District has become the great slave-market of North America, and the port of Alexandria is the Guinea of our proud republic, whence "cargoes of despair" are continually departing[A]. [Footnote A: One dealer, John Armfield, advertises in the National Intelligencer of the 10th of February last, that he has three vessels in the trade, and they will leave the port of Alexandria on the first and fifteenth of each month.]