Texas Secession movement seems rather dead.

In 2016 a secession item almost became part of the Texas State Republican Party Platform. It was voted down by 16 to 14 with one abstention.

This year in 2018 secession as an issue it was missing at the Texas State Republican Party convention. There was no reporting of anything related to secession at the convention by either the press or the self-titled, Texas Nationalism Movement. https://tnm.me/.

With Trump in the White House any impetus behind Texas secession or as they like to call it, Texit, has largely evaporated except for a few die hard supporters.

The Texas Nationalist Movement, or perhaps is should be called the Daniel Miller Movement, is desperate in their publication Texas Partisan to find fault with Donald Trump from a right wing perspective.

https://texianpartisan.com/

The Texas Nationalist movement is really straining to wipe up resentment against the policies of Donald Trump. There is this attempt.

https://texianpartisan.com/washington-to-grab-up-texas-land-in-the-rio-grande-valley/

The potential base for Texas secession movement is the very group that would love a Wall with Mexico.

For any government to build a wall with another nation would involve eminent domain, that is government would acquire the land and would pay for it. If you were going to build something like this you would have to acquire land by eminent domain. Not saying that this wall is desirable or not, but any such wall over a long distance would require eminent domain.

The article is confused and lacking logic and somehow Trump is like Obama.

Persons who want a wall with Mexico will understand that eminent domain is necessary. I don't see how a Trump supporter or wall supporter would see this article as being a legitimate criticism of Trump or Trump's effort to build a wall with Mexico.

The Texas secession movement is going to be fading out unless the Republican Party's  fortunes decline dramatically.

Right now the best they can hope for is that there is the "blue wave" in the 2018 mid-term elections and the Republicans lose the U.S. House. Whether that happens is subject to discussion and I am not sure that there is really a sure guide I can find. Special elections tend to indicate the Republicans are indeed in real trouble.

This analysis indicates that the "Blue Wave" is still likely.

https://www.rollcall.com/news/politics/analysis-house-blue-wave-alive-well

However, the economy is improving and unemployment seems to be dropping. That may reduce any Blue Wave. Also, the election is still some months away. Something unforeseen might develop.

Even if the Democrats somehow capture the U.S. House I don't think that Trump's supporters will be all that disillusions. The Republicans will still have the U.S. Senate and Trump will still be in the White House. Trump supporters will be preoccupied with supporting Trump which Texit would undermine.

If there is no blue wave the Texit movement is going to be moribund until at least 2020.

At some point in the future Texas may not be a "Red State" in which case the ultimate reason for Texas secession, to create some reactionary nation, will no longer exist. The window of Texas secession is closing.

Further the Texas secession movement itself might be a reason for many Texas Republicans to vote for the Democrats. The business interests and professional societies and others who understand how the Texas economy is integrated with the American economy will be dead set against it. 

A Texas secession movement that actually gets something into the Republican Party state platform might be the thing to make Texas a "Blue" state with a Democratic governor, and majorities in both houses of the Texas legislature.

The best is that the Texit movement can hope for a rural movement of crankiness.