The St. Louis directory and register :
Section III.

1. New states may be admitted by the congress into this union;
but no new state shall be formed or erected within the jurisdiction of
any other state—nor any state be formed by the junction of two or
more states or parts of states—without the consent of the legislatures
of the states concerned as well as of the Congress.

2. The Congress shall have power to dispose of, and make all
needful cutes and regulations respecting the territory or other pro-
perty belonging to the United States; and nothing in this constitu-
tion shall be so construed, as to prejudice any claims of the United
States, or of any particular state.