How is Illegal Immigration Different from Invasion?

My last post got me wondering how WWII would have turned out if we hadn't established any lines and just allowed the Germans and Japanese, et al. to walk past our troops as long as they dressed like civilians and kept their weapons out of sight.

Suddenly, we realize that France is even more occupied than when we started? What is being argued in defense of the current situation is that absurd. The first thing that make you a sovereign nation is establishing borders. There have been fights between states (not in the Civil War) over boundaries. Then there was West Virginia which refused to secede along with the rest of Virginia. Cities, counties and states get in serious feuds all the time over boundaries, usually when rivers or lakes change their courses or shorelines. Imagine taking a case like that to the Supreme Court and having them tell you it won't take any action and neither can you.

Curiouser and curiouser.