We can do those things, but how do we build a dome over the country or a wall a thousand feet high to keep out everybody else, for as sure as God made little green apples, they'll be tunneling under or climbing over. The fact of our existence is reason enough to see us all dead. They can't stand the idea of freedom...GW is on Fox TV right now saying this.
All of these ideas have about a million to one shot of ever being realized. But just beginning to discuss them would produce such conniptions among our enemies and false friends that it couldn't help but produce positive effects.