Not legal? Rather a bold statement, I would say. Last time anyone attempted formal withdrawal from the United States, something like 125 years ago, the armaments of the United States blocked the path to independence. The Union endured. But that settled only the practical, not the theoretical, side of the question.
Enough said anyway about the Late Unpleasantness of 1861-65. What...











There's a lot of rice, too. Manufacturing and technology in Texas, also. Texas is the 14th largest economy in the world. If any state could be self-sufficient, it would probably be Texas.