Did 100,000 American citizens illegally flee via Mexico to Honduras, Guatemala and El Salvadore last month?
DC is a cesspool for sure, a fence around it would be a good idea. Perhaps what is needed there is a drain.

If you have a swimming pool and don't build a fence around it then you are liable if someone falls in and drowns or is injured, even a trespasser. A swimming pool is an "attractive nuisance" legally, many localities require fences but besides all of that isn't it irresponsible and immoral not to build a fence around your pool lest children and wildlife drown in it?
Frankly I think America is a little more attractive than a neighbor's swimming pool and that it is immoral that we let people die in the desert trying to get here just because we can't get our shit together enough to put up a little fence to dissuade them.