any portion of the same, shall be received into the Union with or without slavery, as their constitution may prescribe at the time of their admission; provided, that nothing in this act contained shall be construed to inhibit the government of the United States from dividing said territory into two or more territories, in such manner and at such times as congress shall deem convenient and proper, or from attaching any portion of said territory to any other state or territory of the United States; provided further, that nothing in this act contained shall be so construed as to impair the rights of persons or property now pertaining to the Indians in said territory, so long as such rights shall remain unextinguished by treaty between the United States and such Indians, or to include any territory which, by treaty with any Indian tribe, is not, without the consent of said tribe, to be included within the territorial limits or jurisdiction of any state or territory; but all such territory shall be excepted out of the boundaries, and constitute no part of the territory of Kansas, until said tribe shall signify their assent to the president of the United States to be included within the said territory of Kansas, or to affect the authority of the government of the United States to make any regulation respecting such Indians, their lands, property, or other rights, by treaty, law, or otherwise, which it would have been competent to the government to make if this act had never passed.
[The next seventeen sections substantially repeat the foregoing, save that their provisions apply to Kansas instead of Nebraska. The final section refers to both territories, as follows:]
Sec. 37. And be it further enacted, that all treaties, laws, and other engagements made by the government of the United States with the Indian tribes inhabiting the territories embraced within this act, shall be faithfully and rigidly observed, notwithstanding anything contained in this act; and that the existing agencies and superintendencies of said Indians be continued with the same powers and duties which are now prescribed by law, except that the President of the United States may, at his discretion, change the location of the office of superintendent.
