What if a country's refusal to properly fence its borders provides an attractive nuesance that is luring hundreds if not thousands of people to their deaths every year?
It's odd to me that if the a US citizen fails to properly latch the gate around their swimming pool, they'll get sued when someone sneaks-in and drowns.
The tort doctrine of "attractive nuisance" is only applicable to children, and one of the requirements is that the child wouldn't be able to appreciate the risks. Not the case here, so I'm pretty sure immigrants wont be suing the US government in a tort action (not that they could anyways, due to sovereign immunity).
I don't think the fence would work. Some people walk through 500 miles of desert to get here - I doubt some barbed wire and chain link is really going to do much. The "answer" is probably to enforce existing employment laws. But business owners aren't really a fan of that idea - so we'll probably continue to villainize the immigrants and waste taxpayer money on bad poetry and fences.