We desperately need The Wall.

[Binkie The Clown]

1. Wall won't protect us from sea level rise.

The bedrock in Florida is too porous, and sea water will seep up from below. Florida is a lost cause. It will be gone in another 100 years. A wall on the Mexican border? Don't be ridiculous. That won't help anything, and will do vast economic harm. A wall around New York? Not even remotely possible, economically. Already pumps run around the clock to remove seeping sea water from the New York subway system. The subways are doomed, and when they fill up with water, erosion will cause massive sink holes everywhere in the city. New York will have to be abandoned in another 50 to 100 years.

Nobody is going to unite with a clear unified voice over a project that is impossible from the start.