[Scoutmaster]

Arguably, Texas gave up the right to split into five states when it entered into the Compromise of 1850 and relinquished all claims to New Mexico, Colorado, etc., in return for $10 million.

Splitting into additional states is already addressed in Article IV, Section 3 of the U.S. Constitution anyway:

New states may be admitted by the Congress into this union; but no new states 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.

[GeronL]

I want Texas to get its original territory back!