[Publius]

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.

Bottom line; it is constitutional if the above language is honored.

[thoughtomator]

I think you are misinterpreting the clause. This section can be broken into three parts on the semicolons:


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

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

c) 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.


The consent of legislatures and Congress does not apply to the (b) part of the clause, only to the (c) part. So if Eastern Washington wanted to be a new state on its own, that would be unconstitutional. However, if Eastern Washington wanted to join with northern Idaho and create the state of Washaho, and got the consent of both legislatures and Congress, that would be constitutional.