Actually, the Maginot Line could have gone coast-to-coast. There's a reason it didn't: M-O-N-E-Y. The same problem with this idea, BTW.
You think drug dealers would be enterprising, if they fooled with landmines or our soldiers. I believe they'd just be dead.
One more time, for possible penetration into your brain: American landmines are easy to disarm, because we don't use antitampering devices that other countries do. (We seem to value the lives of our combat engineers for some odd reason.) And the various field manuals that tell you place, arm, disarm, and remove those mines are available from the Government Printing Office.
Oh, that's right! I keep forgetting that illegal aliens and terrorists are too stupid to read US Army field manuals, especially the ones laid out as comic books for the benefit of those who can't read.
People as arrogant and foolish as you deserve to get run out of your little fantasy worlds by those illegal aliens who couldn't possibly get into the US.
A force of 5 soldiers per mile, guarding the 30-foot-tall wall, isn't supposed to be impressive, just sufficient to do the job.
I hate to tell you this: it isn't enough to do the job.
I can just imagine 3 million illegal aliens coming ashore on surfboards and little boats each year. What a riot. I can't wait to buy one for myself at the Coast Guard auction.
And that explains the vast numbers of seized boats the Coast Guard has relative to the number of smugglers out there. Oh, waitaminute...they don't have those vast numbers of seized boats. Most of the smugglers never even see a Coast Guard aircraft or ship during their career unless they send a distress call.
Confiscated smuggler's boats are auctioned off all the time. What are you talking about?
Anybody trying to steal any mines will wind up dead. Like they'll just be out there where anyone can just stroll up and pick them up. You're being ridiculous.