On the 23d of February, 1859, there was a Senate debate on this question, in which Douglas contended that the Democratic party, by supporting General Cass in 1848, had endorsed the same opinion that he (Douglas) had maintained at Freeport, since Cass, in his so-called "Nicholson Letter," had affirmed the doctrine of squatter sovereignty as to slavery in the territories. Douglas now contended that every Southern state that gave its electoral vote to Cass, including Mississippi, was committed to the doctrine that the people of a territory could lawfully exclude slavery while still in a territorial condition. Jefferson Davis replied: The State of Mississippi voted [in 1848] under the belief that that letter meant no more than that when the territory became a state, it had authority to decide that question.... If it had been known that the venerable candidate then of the Democratic party, and now Secretary of State, held the opinion which he so frankly avowed at a subsequent period on the floor of the Senate, I tell you, sir [addressing Douglas], he would have had no more chance to get the vote of Mississippi than you with your opinions would have to-day.[35] On the 2d of February, 1860, Davis introduced a series of resolutions in the Senate of a political character evidently intended to head off Douglas at the coming Charleston Convention; or, failing that, to pave the way for the withdrawal of the delegates of the cotton-growing states. The fourth resolution was directed against the Douglas doctrine of unfriendly legislation, thus: _Resolved_, That neither Congress nor a territorial legislature, whether by direct legislation or legislation of indirect and unfriendly nature, possesses the power to annul or impair the constitutional right of any citizen of the United States to take his slave property into the common territories; but it is the duty of the Federal Government there to afford for that, as for other species of property, the needful protection; and if experience should at any time prove that the judiciary does not possess power to insure adequate protection, it will then become the duty of Congress to supply such deficiency. The Senate debate between Douglas and his Southern antagonists was resumed in May, after the explosion of the Charleston Convention. Douglas made a two days' speech (May 15 and 16) occupying four hours each day, but did not mention the subject of unfriendly legislation, or show how a territorial legislature could nullify or circumvent the Dred Scott decision. He was answered by Benjamin, of Louisiana, in a speech which made a sensation throughout the country, and in which the doctrine of unfriendly legislation was mauled to tatters. Benjamin was the first Southern statesman to make his bow to the rising fame of Lincoln. After examining the Freeport debate, he said: