For the amount of contributions which have been levied in this form I refer you to the accompanying reports of the Secretary of War and of the Secretary of the Navy, by which it appears that a sum exceeding half a million of dollars has been collected. This amount would undoubtedly have been much larger but for the difficulty of keeping open communications between the coast and the interior, so as to enable the owners of the merchandise imported to transport and vend it to the inhabitants of the country. It is confidently expected that this difficulty will to a great extent be soon removed by our increased forces which have been sent to the field.
Measures have recently been adopted by which the internal as well as the external revenues of Mexico in all places in our military occupation will be seized and appropriated to the use of our Army and Navy.
The policy of levying upon the enemy contributions in every form consistently with the laws of nations, which it may be practicable for our military commanders to adopt, should, in my judgment, be rigidly enforced, and orders to this effect have accordingly been given. By such a policy, at the same time that our own Treasury will be relieved from a heavy drain, the Mexican people will be made to feel the burdens of the war, and, consulting their own interests, may be induced the more readily to require their rulers to accede to a just peace.
After the adjournment of the last session of Congress events transpired in the prosecution of the war which in my judgment required a greater number of troops in the field than had been anticipated. The strength of the Army was accordingly increased by "accepting" the services of all the volunteer forces authorized by the act of the 13th of May, 1846, without putting a construction on that act the correctness of which was seriously questioned. The volunteer forces now in the field, with those which had been "accepted" to "serve for twelve months" and were discharged at the end of their term of service, exhaust the 50,000 men authorized by that act. Had it been clear that a proper construction of the act warranted it, the services of an additional number would have been called for and accepted; but doubts existing upon this point, the power was not exercised. It is deemed important that Congress should at an early period of their session confer the authority to raise an additional regular force to serve during the war with Mexico and to be discharged upon the conclusion and ratification of a treaty of peace. I invite the attention of Congress to the views presented by the Secretary of War in his report upon this subject.