The Germanic Association of Customs and Commerce, which since its establishment in 1833 has been steadily growing in power and importance, and consists at this time of more than twenty German States, and embraces a population of 27,000,000 people united for all fire purposes of commercial intercourse with each other and with foreign states, offers to the latter the most valuable exchanges on principles more liberal than are offered in the fiscal system of any other European power.  From its origin the importance of the German union has never been lost sight of by the United States.  The industry, morality, and other valuable qualities of the German nation have always been well known and appreciated.  On this subject I invite the attention of Congress to the report of the Secretary of State, from which it will be seen that while our cotton is admitted free of duty and the duty on rice has been much reduced (which has already led to a greatly increased consumption), a strong disposition has been recently evinced by that great body to reduce, upon certain conditions, their present duty upon tobacco.  This being the first intimation of a concession on this interesting subject ever made by any European power, I can not but regard it as well calculated to remove the only impediment which has so far existed to the most liberal commercial intercourse between us and them.  In this view our minister at Berlin, who has heretofore industriously pursued the subject, has been instructed to enter upon the negotiation of a commercial treaty, which, while it will open new advantages to the agricultural interests of the United States and a more free and expanded field for commercial operations, will affect injuriously no existing interest of the Union.  Should the negotiation be crowned with success, its results will be communicated to both Houses of Congress.

I communicate herewith certain dispatches received from our minister at Mexico, and also a correspondence which has recently occurred between the envoy from that Republic and the Secretary of State.  It must but be regarded as not a little extraordinary that the Government of Mexico, in anticipation of a public discussion (which it has been pleased to infer from newspaper publications as likely to take place in Congress, relating to the annexation of Texas to the United States), should have so far anticipated the result of such discussion as to have announced its determination to visit any such anticipated decision by a formal declaration of war against the United States.  If designed to prevent Congress from introducing that question as a fit subject for its calm deliberation and final judgment, the Executive has no reason to doubt that it will entirely fail of its object.  The representatives of a brave and patriotic people will suffer no apprehension of future consequences to embarrass them in the course of their proposed deliberations, nor will the executive department of the Government fail for any such cause to discharge its whole duty to the country.