Afghanistan I'll grant you, mostly, because there are no US civilians for miles and miles. There are some soldiers, though. But Mexico? No. No, for so many

Afghanistan I'll grant you, mostly, because there are no US civilians for miles and miles. There are some soldiers, though. But Mexico? No. No, for so many reasons: it's a favored tourist destination, for one. Second, relatedly, Spring Break takes place there. America will be damned before it lets her young women drop dead in such a manner! And, that's an industry unto itself, with a lot of US investment tied up there. Third, the Latino population in America votes and are not peachy fine with their cousins dropping dead. The Mexican contingent within that Latino population is pretty large. Fourth is the giant, hardly monitored stretch of border between Mexico and US. Afghanistan is something like three borders and an ocean or two away from US. Pretty easy to stop violence from spilling over. But Mexico? A bit harder.