The administration of President Polk opened March 4, 1845; and on the same day, the Senate being convened for the purpose, the cabinet ministers were nominated and confirmed. In December following the 29th Congress was organized. The House of Representatives, being largely Democratic, elected the Speaker, by a vote of 120, against 70 for the Whig candidate. At this session the “American” party—a new political organization—first made its appearance in the National councils, having elected six members of the House of Representatives, four from New York and two from Pennsylvania. The President’s first annual message had for its chief topic, the admission of Texas, then accomplished, and the consequent dissatisfaction of Mexico; and referring to the preparations on the part of the latter with the apparent intention of declaring war on the United States, either by an open declaration, or by invading Texas. The message also stated causes which would justify this government in taking the initiative in declaring war—mainly the non-compliance by Mexico with the terms of the treaty of indemnity of April 11, 1839, entered into between that State and this government relative to injuries to American citizens during the previous eight years. He also referred to the fact of a minister having been sent to Mexico to endeavor to bring about a settlement of the differences between the nations, without a resort to hostilities. The message concluded with a reference to the negotiations with Great Britain relative to the Oregon boundary; a statement of the finances and the public debt, showing the latter to be slightly in excess of seventeen millions; and a recommendation for a revision of the tariff, with a view to revenue as the object, with protection to home industry as the incident. At this session of Congress, the States of Florida and Iowa were admitted into the Union; the former permitting slavery within its borders, the latter denying it. Long before this, the free and the slave States were equal in number, and the practice had grown up—from a feeling of jealousy and policy to keep them evenly balanced—of admitting one State of each character at the same time. Numerically the free and the slave States were thus kept even: in political power a vast inequality was going on—the increase of population being so much greater in the northern than in the southern region.