I disagree, building a wall in Texas would not be ceding the Rio Grande River to Mexico. If we build the wall back 150’ from the Rio Grande and patrol the Mexican side of the fence between the wall and the river then the Rio Grand de facto becomes part of that wall. Your argument is like saying building a castle with a moat cedes the moat to the enemy.
We also need to reintroduce the alligator to the Rio Grande.
*** We also need to reintroduce the alligator to the Rio Grande ***
Alligators are there already, just need to be better fed