According to the Roosevelt Reservation, the SCOTUS is wrong in the case of Texas.It's called the Roosevelt Reservation. It's 60 ft.
The Fed governments owns the first 60ft of land on the US side of the border.
The Supreme Court basically ruled that TX can't take control of federal property and kick the feds out.
Roosevelt Reservation - Wikipedia
en.m.wikipedia.org
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.[1]
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".[2][3][4] 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.
In non-legal jargon, the Feds and Border Patrol have no right on the river bank in Texas and can fuck off.