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.