_Pari passu_ with the dissemination and growth of this dangerous opinion, the political school which cherished it endeavored to promote the object steadily held in view, by restricting and embarrassing the action of the Federal Government in every possible way. Notwithstanding the distrust and aversion of the Jackson party against them, continued long after the events of 1832, they succeeded in forming, first a coalition, and finally a thorough union with the great popular organization--the democratic party. Holding the balance of power between that party and their opponents, they dictated terms to the successive democratic conventions, and, in effect, controlled their nominations and their policy. They imposed upon that party the formidable dogma of 'a strict construction of the Constitution,' and under that plausible pretext, denied to the Government the exercise of every useful power necessary to make it strong and efficient within the limits of its legitimate functions. Their evident object, though cautiously and successfully concealed, was to weaken the Federal Government, and build up the power of the separate States, so that the former, shorn of its constitutional vigor, and crippled in its proper field of action, might, at the critical moment, fall an easy prey to their iniquitous designs. The navigation of the great Mississippi river, the imperial highway of the continent, could not be improved, because every impediment taken away, and every facility given to commerce on its bosom, were so much strength added to the bonds of the Union. The harbors of the great lakes and of the Atlantic coast could not be rendered secure by the agency of the Federal Government, because every beneficent act of this nature fixed it more firmly in the affections of the people, and gave it additional influence at home and abroad. The great Pacific railroad--a measure of infinite importance to the unity of the nation, to the development of the country, and to the general prosperity, as well as to the public defence--a work so grand in its proportions, and so universal in its benefits, that only the power of a great nation was equal to its accomplishment or capable and worthy of its proper control--this great and indispensable measure was defeated from year to year, so long as the conspirators remained in Congress to oppose it, and was only passed in the end, after they had launched the rebellion, and made their open attack against the Government, which they had so long sought to embarrass and weaken, in view of this very contingency.