Notwithstanding the frequent triumphs of the South, aided by Whigs and Democrats from the North, who played into the hands of Southern politicians, Mr. Calhoun was not entirely at rest in his mind. He saw with alarm the increasing immigration into the Western States, which threatened to disturb the balance of power which the South had ever held; and with the aid of Southern leaders he now devised a new and bold scheme, which was to annex Texas to the United States and thus enlarge enormously the area of slavery. It was probably his design, not so much to strengthen the slaveholding interests of South Carolina, as to increase the political power of the South. By the addition of new slave States he could hope for more favorable legislation in Congress. The arch-conspirator--the haughty and defiant dictator--would not only exclude Congress from all legislation over its own territory in the national District, but he now would make Congress bolster up his cause. He could calculate on a "solid South," and also upon the aid of the leaders of the political parties at the North,--"Northern men with Southern principles,"--who were strangely indifferent to the extension of slavery. The Abolitionists were indeed now a power, but the antislavery sentiment had not reached its culmination, although it had become politically organized. For the campaign of 1840, seeing the futility of petition and the folly of expecting action on issues foreign to those on which Congressmen had been elected, the Abolitionists boldly called a National Convention, in which six States were represented, and nominated candidates for the presidency and vice-presidency. It was a small and despised beginning, but it was the germ of a mighty growth. From that time the Liberty Party began to hold State and National Conventions, and to vote directly on the question of representatives. They did not for years elect anybody, but they defeated many an ultra pro-slavery man, and their influence began to be felt. In 1841 Joshua R. Giddings, from Ohio, and in 1843 John P. Hale from New Hampshire and Hannibal Hamlin from Maine brought in fresh Northern air and confronted the slave-power in Congress, in alliance with grand old John Quincy Adams,--whose last years were his best years, and have illumined his name. Most of the antislavery men were still denounced as fanatics, meddling with what was none of their business. In 1843 they had not enrolled in their ranks the most influential men in the community. Ministers, professors, lawyers, and merchants generally still held aloof from the controversy, and were either hostile or indifferent to it. So, with the aid of the "Dough-Faces," as they were stigmatized by the progressive party, Calhoun was confident of success in the Texan scheme.