Are there any practical ramifications to the threat of Texas seceding?

[Effete Snob]

9. Secession is not a "thing"

There are some outstandingly dumb people in Texas who were, wrongly, educated that Texas has a right to do so.

They are incorrect, and this issue was decided long ago in Texas v. White 74 U.S. (7 Wall.) 700 (1869)"

"When, therefore, Texas became one of the United States, she entered into an indissoluble relation. All the obligations of perpetual union, and all the guaranties of republican government in the Union, attached at once to the State. The act which consummated her admission into the Union was something more than a compact; it was the incorporation of a new member into the political body. And it was final. The union between Texas and the other States was as complete, as perpetual, and as indissoluble as the union between the original States. There was no place for reconsideration or revocation, except through revolution or through consent of the States."

The US Constitution is not a long read. it is organized into Four principal Articles, addressing:

I. Congress

II. The President

III. The Courts

IV. The States

The remaining three articles deal with amendment, ratification, and a few miscellaneous items.

Under Article IV:

"The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion"

For the US to guarantee every State a republican form of government, the US retains jurisdiction over each state, and hence they cannot secede without the consent of the rest of the country.