None of that is effective unless backed up with live armed military patrols and quick-reaction forces dispersed along the barriers.
They will also need pre-approved authorization to use lethal force at the discretion of local commanders - and to fire across the border if they are attacked.
Do we want an effective wall or not?
remote-controlled weapons systems would be effective - a few rounds expended would quell the most ardent “asylum” seeker.
ROE - free fire zone.
Of course we want - need - an effective wall, else why bother?