Article IV, Section 3, Clause 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.
Given that state and federal legislative consent is needed to do what these counties want to do, I don't see the Democratic-controlled federal Senate wanting to create new seats for likely conservative lawmakers.
What am I overlooking?
Let this go forward provided the Feds cut loose Texas and admit Puerto Rico.
Just a wild guess...The feds operated outside the Constitution, broke the law repeatedly and so can those in the counties?