FWI: In 2029, Texans advocate for independence following a Democratic victory in the 2028 elections

Inspired by some Californians who want to be a country. While an independent California obviously can’t happen due to secession being illegal in the United States, more people advocate for it to happen since Trump’s 2024 re-election, which kinda reminds us of when it happened the first time and when Texas demanded to be a country when a Democrat was president. So, in this scenario, the winner of the 2028 presidential elections is a Democrat, and Texas secessionist movements grew and became louder by the time 2029 rolls up. What happens?