"Republican enthusiasm for the Mexican border wall is limited by the fact that it is among the most wasteful, impractical and useless ideas ever spouted by an American president."

Not the worst idea, but surely the stupidest, although the lure of "The Great Wall of America" as a killer future tourist attraction has a certain appeal. 

In 1983 Ronald Reagan proposed the "Star Wars" missile defense shield (aka the Strategic Defense Initiative), cobbed from some science fiction movie, and billions of $ were poured down the drain. Thirty four years later, billions of $ are still being poured down the drain, under various new names, and we are still not safe from a missile attack.

Of course, we can always wipe everyone else out, so be happy!

Stephen J. Remington