No, we don’t. Not one with the required features, not unless we impose a state income tax. That’s not happening.
Texas has a border that's 1,254 miles long and 29 million citizens. That works out to 23,136 Texans per mile or 4.4 Texans per foot, or less that 3" for every Texan. I think they can afford it.
The criminals running Texas are happy keeping their social spending slush funds and not doing what is necessary to protect Texans.
As far as why you think it is too expensive for Texas build their own wall I can only guess you have a shirtless George W Bush poster in your bedroom somewhere.
To each his own. Ugh..