That’s interesting and all but the constitution gives the federal government exclusive control over things like immigration and national borders. The Biden administration would challenge it if Abbot actually tried to do it. Of course Texas would do it on state owned land. But if it’s for the purpose of doing that which the constitution reserves for the fed then Texas might lose that battle in court just like Arizona lost when it tried to have state/local law enforcement investigate illegals.The FedGov only controls a 60 foot wide strip from the US-Mexico border inland in Cali, AZ and New Mexico. It is even less than that in Texas. I think you could build a nice wall 70 feet inside the border and the Feds couldn't say jack about it
From the wiki
The Roosevelt Reservation is the 60-foot (18 m)-wide strip of land owned by the United States Federal Government along the United States side of the United States–Mexico Border in three of the four border states. Federal and tribal lands make up 632 miles (1,017 km), or approximately 33 percent, of the nearly 2,000 miles (3,200 km) total. Private and state-owned lands constitute the remaining 67 percent of the border, most of which is located in Texas.
In 1907, Theodore Roosevelt in a Presidential Proclamation (35 Stat. 2136) established the reservation in order to keep all public lands along the border in California, Arizona, and New Mexico "free from obstruction as a protection against the smuggling of goods between the United States and Mexico" Texas was excluded because Texas retained all public lands upon the Texas annexation and admittance as a state, much of which has been sold over the years to private parties.