Drones are irrelevant to this discussion unless they can use force to stop illegal immigrants. And I havenu2019t heard anyone say letu2019s take the armed drones weu2019ve used to kill people in drone strikes since the Obama administration on the US-Mexico border.US defense contractor Raytheon build a long stretch of sensor pylons around 2023 they called a u201csmart fenceu201d. It had tons of sensors. It was useless and did nothing but report crossings because we couldnu2019t get Border Patrol agents there to arrest people.That is the benefit of a wall - it works continuously. It can be part of an entire infrastructure system to prevent people driving through and climbing over. In the case of the Saudi border wall around Yemen and the Iraqi border, both to stop waves of refugees and terrorists, they had a series of angled ditches that stop a truck trying to ram through as well as prevent ladders from being leaned against the wall.Walls have another benefit - once it is built, it stands. You donu2019t have to worry about maintaining diligence and enforcement the way an army of drones has to be backed by an army of immigration officials. Or someone in a later administration abandoning their obligations to defend said border.