The big problem in Texas is that the Texas GOP is largely bought and paid for by big business: remember the "gay marriage" debacle, where nascent resistance to Obergefell was quashed almost immediately by big business pressure on the Texas GOP, who almost wet themselves in fear and practically tripped over themselves in their haste to accept "gay" marriage.
“Texas declared independence from Mexico in 1836 and spent the next nine years as its own nation. While the young country’s leaders first expressed interest in becoming a state in 1836, the Republic of Texas did not join the United States until 1845, when Congress approved the Joint Resolution for Annexing Texas to the United States.
This resolution, which stipulated that Texas could, in the future, choose to divide itself into “New States of convenient size not exceeding four in number, in addition to said State of Texas” is often a cause of confusion about the state’s ability to secede. But the language of the resolution is clear: Texas can split itself into five new states. It says nothing of splitting apart from the United States.”