In view of all the facts, and of its proposed restraint upon the constitutional power of new States besides Missouri, I fully believe the Supreme Court of the United States correctly laid down the law in the Dred Scott decision, declaring the 8th section of the act of 6th March, 1820, being the prohibition of slavery, to be unconstitutional and void, for the simple reason that it was the right _of the people_ of those new States to make a constitution or laws for or against slavery as they saw fit, and not the right of the Congress, which has no power under its own Constitution to make State Constitutions. The principle of compromise embraced in the Missouri line, whether legal or not, calmed the agitation of the question of slavery, which had, during the Missouri struggle, assumed a dangerous form. It shut out slavery in the vast region north of 36 deg. 30 min., not adapted to slave labor, and permitted it south of that line where slavery had taken or was likely to take root. Therefore when Arkansas applied in 1836 for admission as a Slave State, she came in without serious controversy, though northern opposition in Congress was not even then silent. Between the establishment of Texan independence in 1836 and her annexation to the United States in 1845, in view of the latter event, the question of slavery extension became one of absorbing interest to the nation. The Democratic party recognized it in the 7th article of their platform in their National Convention of 1840, taking the true ground of non-intervention by Congress. In 1843 the Liberty party, so called, organized upon the distinct ground of opposition to slavery. In 1844 the Democratic party reaffirmed their platform of 1840, and declared in favor of annexing Texas, and its candidates were sustained by the people. In 1845 the Congressional agitation was resumed on the question of annexing Texas. It resulted in the annexation, upon the compromise of extending the Missouri compromise line of 36 deg. 30 min. across the Texan territory, leaving a disputed boundary north of that line, which was adjusted in 1850 by making 36 deg. 30 min. the north boundary of Texas. In 1846 the question of prohibition again came up in Congress on the bill to organize a territorial government for Oregon, and was kept in agitation until Oregon was forced, for self-protection to form a provisional government; and after a proposition of Mr. Douglas, sustained by the Senate, to extend the Missouri compromise line to the Pacific, had been voted down in the House by northern votes, the Oregon bill was finally passed in 1848, with the proviso of the ordinance of 1787 against slavery, the South voting in a body against its passage--not because they expected slavery to go there, but because they wanted the Missouri line of compromise extended to the Pacific.