There is no way the border doesn’t need to be well patrolled. A fence/wall just helps to increase the coefficient of friction.
Remember Pat Buchanan’s proposal for an electrified barbed-wire fence backed up by a moat? Maybe that’s in addition to Trump’s Wall.
But we should triple the size of ICE and the Border Patrol and give them better ROE, then supplement them with drones.
Then institute jail time for hiring illegals (fines just get passed along to the consumer) and cut off ALL benefits to illegals.