Neither argument nor remonstrance, however, served to induce the president or his supporters to pause. They pretended to foresee great and signal blessings as the necessary result of thus extending the free institutions of the United States. And, accordingly, it was, upon the recommendation of the president, resolved by congress to admit Texas upon an equal footing with the original states. And the grant was made to her, which had not before been made since the adoption of the federal constitution, to allow her two representatives, while her population was insufficient to entitle her to one, except under the specific provision of the constitution, that each state shall have, at least, one representative.
In consequence of these measures, in relation to Texas, by the American government, and at an early stage of them, the Mexican minister demanded his passports; and, at a subsequent date, the American minister, Mr. Slidell, was refused a reception and recognition, as such, by the Mexican government. Thus, as had been predicted by the opposers of annexation, a serious misunderstanding, which already existed between the United States and Mexico, in relation to the conduct of the latter touching other matters, was rendered still more serious, and was rapidly tending, it was plainly perceptible, to open hostilities between the two powers.
While such was the position of our relations with Mexico—the horizon becoming daily more obscure, and clouds, portentous of evil, were rising higher and higher—a single act of the president precipitated the war which many had predicted, but which all saw reason to deplore. This was an order issued to General Taylor to break up his encampment at Corpus Christi, and, passing the Neuces, to concentrate his forces on the left bank of the Rio del Norte.
Division of Oregon.—Prior to the introduction of Mr. Polk into office, several attempts had been made by the governments of the United States and Great Britain to settle, by negotiations, questions in dispute between them, as to the proprietorship and occupation of Oregon—all of which had failed. These negotiations were conducted at London, in the years 1818, 1824, and 1826; the first two, under the administration of Mr. Monroe; the last, under that of Mr. Adams. The negotiations of 1818 having failed to accomplish its object, it was agreed, October 20th of that year, that, to the citizens of each nation, the harbors, bays, &c., should be open for ten years. The negotiations of 1824, left this agreement untouched, as did those of 1826; but, August 6th, 1827, it was further agreed, that it should be competent for either party, after October 20th, 1828, to annul this convention, by giving to the other twelve months' notice.
Subsequently, negotiations were resumed. In 1844, the British plenipotentiaries offered to divide the Oregon territory by the forty-ninth parallel of latitude, leaving the navigation of Columbia river free to both nations. This proposition was immediately rejected by the American minister; whereupon, he was invited by the British minister to make a proposition in return.
At this stage of the negotiation, Mr. Polk took the presidential chair; and, anxious to settle the question, he made the same offer which had been made by the British minister, excepting the free navigation of the Columbia river. This proposition being unacceptable, further negotiations terminated.
On the meeting of congress, in December, 1845, the president recommended that the notice required by the convention of August, 1827, should be given to Great Britain, which, at the expiration of a year, would bring the question to an issue. The subject, thus brought to the notice of congress, excited the highest possible interest. The friends of the executive, and perhaps others, were strongly in favor of giving the required notice, while serious apprehensions were entertained by many, that the practical effect of such a measure would be a war between the two nations. At length, the question was settled by the adoption of a resolution in accordance with the executive recommendation. In the house, the vote on the resolution was one hundred and forty-two to forty-six; in the senate, forty-two to ten.
The official notice, thus directed, was given by the president to her majesty Queen Victoria, on the 28th of April, 1846. Before the delivery of this notice, however, the British minister at Washington had received instructions to submit to the American government a new and further proposition for a partition of the territory in dispute.
In a special and confidential communication to the senate on the 10th of June, the president informed congress that such a proposition had been made, and requested their advice. At the same time, he reiterated the views expressed in his annual message, that no compromise, which the United States ought to accept, could be effected; that our title to the whole of Oregon was maintained by irrefragable arguments, and that the claim could not be abandoned, without a sacrifice of both national honor and interests. Such was the tenor of the president's communication. But he solicited advice. In a resolution, adopted thirty-eight to twelve, the senate advised the president to accept the proposal of the British government, which he accordingly did; and, on the 16th of June, a convention or treaty, settling boundaries, &c., in relation to Oregon, was communicated by the president to the senate, by the latter of which it was ratified, forty-one to fourteen.