The executive government of the United States has no power or authority to determine what was the true line of boundary between Mexico and the United States before the treaty of Guadalupe Hidalgo, nor has it any such power now, since the question has become a question between the State of Texas and the United States. So far as this boundary is doubtful, that doubt can only be removed by some act of Congress, to which the assent of the State of Texas may be necessary, or by some appropriate mode of legal adjudication; but in the meantime, if disturbances or collisions arise or should be threatened, it is absolutely incumbent on the executive government, however painful the duty, to take care that the laws be faithfully maintained; and he can regard only the actual state of things as it existed at the date of the treaty, and is bound to protect all inhabitants who were then established and who now remain north and east of the line of demarcation in the full enjoyment of their liberty and property, according to the provisions of the ninth article of the treaty. In other words, all must be now regarded as New Mexico which was possessed and occupied as New Mexico by citizens of Mexico at the date of the treaty until a definite line of boundary shall be established by competent authority.
This assertion of duty to protect the people of New Mexico from threatened violence, or from seizure to be carried into Texas for trial for alleged offenses against Texan laws, does not at all include any claim of power on the part of the Executive to establish any civil or military government within that Territory. That power belongs exclusively to the legislative department, and Congress is the sole judge of the time and manner of creating or authorizing any such government.
The duty of the Executive extends only to the execution of laws and the maintenance of treaties already in force and the protection of all the people of the United States in the enjoyment of the rights which those treaties and laws guarantee.
It is exceedingly desirable that no occasion should arise for the exercise of the powers thus vested in the President by the Constitution and the laws. With whatever mildness those powers might be executed, or however clear the case of necessity, yet consequences might, nevertheless, follow of which no human sagacity can foresee either the evils or the end.
Having thus laid before Congress the communication of his excellency the governor of Texas and the answer thereto, and having made such observations as I have thought the occasion called for respecting constitutional obligations which may arise in the further progress of things and may devolve on me to be performed, I hope I shall not be regarded as stepping aside from the line of my duty, notwithstanding that I am aware that the subject is now before both Houses, if I express my deep and earnest conviction of the importance of an immediate decision or arrangement or settlement of the question of boundary between Texas and the Territory of New Mexico. All considerations of justice, general expediency, and domestic tranquillity call for this. It seems to be in its character and by position the first, or one of the first, of the questions growing out of the acquisition of California and New Mexico, and now requiring decision.
No government can be established for New Mexico, either State or Territorial, until it shall be first ascertained what New Mexico is, and what are her limits and boundaries. These can not be fixed or known till the line of division between her and Texas shall be ascertained and established; and numerous and weighty reasons conspire, in my judgment, to show that this divisional line should be established by Congress with the assent of the government of Texas. In the first place, this seems by far the most prompt mode of proceeding by which the end can be accomplished. If judicial proceedings were resorted to, such proceedings would necessarily be slow, and years would pass by, in all probability, before the controversy could be ended. So great a delay in this case is to be avoided if possible. Such delay would be every way inconvenient, and might be the occasion of disturbances and collisions. For the same reason I would, with the utmost deference to the wisdom of Congress, express a doubt of the expediency of the appointment of commissioners, and of an examination, estimate, and an award of indemnity to be made by them. This would be but a species of arbitration, which might last as long as a suit at law.
So far as I am able to comprehend the case, the general facts are now all known, and Congress is as capable of deciding on it justly and properly now as it probably would be after the report of the commissioners. If the claim of title on the part of Texas appears to Congress to be well founded in whole or in part, it is in the competency of Congress to offer her an indemnity for the surrender of that claim. In a case like this, surrounded, as it is, by many cogent considerations, all calling for amicable adjustment and immediate settlement, the Government of the United States would be justified, in my opinion, in allowing an indemnity to Texas, not unreasonable or extravagant, but fair, liberal, and awarded in a just spirit of accommodation.
I think no event would be hailed with more gratification by the people of the United States than the amicable adjustment of questions of difficulty which have now for a long time agitated the country and occupied, to the exclusion of other subjects, the time and attention of Congress.
Having thus freely communicated the results of my own reflections on the most advisable mode of adjusting the boundary question, I shall nevertheless cheerfully acquiesce in any other mode which the wisdom of Congress may devise. And in conclusion I repeat my conviction that every consideration of the public interest manifests the necessity of a provision by Congress for the settlement of this boundary question before the present session be brought to a close. The settlement of other questions connected with the same subject within the same period is greatly to be desired, but the adjustment of this appears to me to be in the highest degree important. In the train of such an adjustment we may well hope that there will follow a return of harmony and good will, an increased attachment to the Union, and the general satisfaction of the country.
MILLARD FILLMORE.