US Presidency
1850

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.