Well you are not going to get farther south than myself. Right now I'm in Brownsville (that is just where I work). But I live 30 miles north in Harlingen. Just for anybody who doesn't know where Brownsville is, all you have to do is look at a map of Texas and then look at the southern most tip. And that is Brownsville. If you go any farther south you will be in Mexico. In fact the Mexican border is about a half a mile away from my work.