If you want to talk about morality, then you don't need to even mention legal terms like booby-trap. They are irrelevant. I like Jezebel and I am a militant leftist. I am also for unrestricted immigration while still making crossing at non-official border points illegal. But non of these things matter in my initial argument.
If you think borders/countries should exist, like everyone except for born-too-soon anarchists, then there is no problem here. Jezebel aren't anarchists though. If pressed they will say the disagree with the current US policy on immigration. Not that they all borders should be open at every geographic point of entry.

So they are bringing in legal terms like "booby-trap" to try to muddy the waters instead of saying what their criticism is. Their criticism is that current border-patrol policy's are too harsh (I agree), but securing a border can't be a clean thing. Either a border exists as a State enforced entity or it doesn't. If they want to say that the US should open it's borders, I'm on board, that doesn't mean free crossing into the US at every geographic spot. So in order to discourage crossing at non-official crossings, the only answer is passive barriers. If you are against passive barriers then you have to make that clear in the text, but Jezebel didn't do that.