It will need to be adequately guarded day and night all along its length to stop people blowing up bits of it and rushing through.
It will have to be a wall really deep to stop people tunnelling underneath it. And really high to stop people flying over it in planes. And of course it has to spread west and east across the Pacific and Atlantic to stop people using boats ... and submarines.
But then immigrants might not just be coming from Mexico so you need to instead build a wall along the borders of the USA. So no more beaches for you Americans! Baywatch can be remade as Wallwatch.
It will have to be a wall really deep to stop people tunnelling underneath it. And really high to stop people flying over it in planes. And of course it has to spread west and east across the Pacific and Atlantic to stop people using boats ... and submarines.
But then immigrants might not just be coming from Mexico so you need to instead build a wall along the borders of the USA. So no more beaches for you Americans! Baywatch can be remade as Wallwatch.