The war has not been waged with a view to conquest, but, having been commenced by Mexico, it has been carried into the enemy's country and will be vigorously prosecuted there with a view to obtain an honorable peace, and thereby secure ample indemnity for the expenses of the war, as well as to our much-injured citizens, who hold large pecuniary demands against Mexico. By the laws of nations a conquered country is subject to be governed by the conqueror during his military possession and until there is either a treaty of peace or he shall voluntarily withdraw from it. The old civil government being necessarily superseded, it is the right and duty of the conqueror to secure his conquest and to provide for the maintenance of civil order and the rights of the inhabitants. This right has been exercised and this duty performed by our military and naval commanders by the establishment of temporary governments in some of the conquered Provinces of Mexico, assimilating them as far as practicable to the free institutions of our own country. In the Provinces of New Mexico and of the Californias little, if any, further resistance is apprehended from the inhabitants to the temporary governments which have thus, from the necessity of the case and according to the laws of war, been established. It may be proper to provide for the security of these important conquests by making an adequate appropriation for the purpose of erecting fortifications and defraying the expenses necessarily incident to the maintenance of our possession and authority over them. Near the close of your last session, for reasons communicated to Congress, I deemed it important as a measure for securing a speedy peace with Mexico, that a sum of money should be appropriated and placed in the power of the Executive, similar to that which had been made upon two former occasions during the Administration of President Jefferson.