Illinois
Conservative Beacon
“Any act of the legislature repugnant to the Constitution is void.”
U.S. Supreme Court - 1803
Constitution of the United States of America
Article IV: Interstate Relations
Article 4, Section 3:  New States, Territories

4.3.1
 New States may be admitted by the Congress into this Union;

4.3.2  but no new State shall be formed or erected within the Jurisdiction of any
other State;

4.3.3  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.

4.3.4  The Congress shall have Power to dispose of and make all needful Rules
and Regulations respecting the Territory or other Property belonging to the United
States;

4.3.5  and nothing in this Constitution shall be so construed as to Prejudice any
Claims of the United States, or of any particular State.