No, history. The Texas Legislature voted to approve the actions of the secession convention.
No. Only the admission of NEW states was regulated.
No. Changes to existing states are regulated as well.
No. Please re-read the Supremacy clause.
I did, specifically clause 2.
In post 1055 you stated, “The acts of secession were legislation passed by the Texas legislature, and which violated the Constitution”. The Texas Legislature might have approved the secession act, but that does not mean it was an act of the legislature.
Approval of actions concerning the status of states was a power delegated to the United States Congress by Article IV of the Constitution.
Can you post the clause prohibiting a state from divesting itself of lands to a foreign country? Can you post the clause prohibiting a state from seceding? Can you post the clause prohibiting a state from enlarging it's borders?
I did, specifically clause 2.
Again, the people of each state are not bound by the Supremacy clause. Even then, what power has been delegated to the federal government to coerce a state official? If the public official, including the governor of the state,
'refuses to discharge this duty, there is no power delegated to the General Government, either through the Judicial Department or any other department, to use any coercive means to compel him.'
Chief Justice Taney, Kentucky v. Dennison, 65 US 66 (1860)