"White-winged doves can fly over the wall," says Mr. Harrison. How can he be so simple to not see the irony of his statement? Mexicans always FLY over those walls too. They don't cross by land. Indeed, illegal border crossings are at a historic 46-year low. That's why the idea of this crazy wall to any thinking person is so clearly and utterly ludicrous on the very face of it . My cat knows that the wall "idea" is just to inflame the passions of the fearful, simple people with enlarged amygdalae glands so they can be led around by their gullible noses.