It's not just Texans near the border: "Statewide, 61 percent of Texans oppose building a wall, while 35 percent support it and 4 percent don’t know or declined to answer, according to a poll conducted in April by Texas Lyceum, a nonprofit leadership organization." https://www.star-telegram.com/news/state/texas/article152402... (Link to study, sample size 1000: https://www.texaslyceum.org/page-18205 )

If you visit the Big Bend area and see the Rio Grande border area, you’ll see the insanity of the idea. There’s a river and steep banks on both sides. There’s also a symbiosis where Mexicans cross to sell trinkets (many bearing the words “no wall” en espanol) and tourists cross into Mexico to spend the day.