It's been awhile since I was out of country but do remember especially in the Carabean that US agents were stationed in countries to check passports and to make sure you were who you said you were and would not let you leave that Carabean country for America until everything was right...It seems the U.S. could have ONE office at a port of entry IN MEXICO, with say 20 judges to hear cases and perhaps another 20 to adjudicate a person before entry....keep Foreigners in Mexico until their appeals are heard....Mexico, on the other hand could make it difficult for Latin Americans to get this far north and prevent having THOUSANDS of now unwanted , unruly, diseased, and criminal aliens from piling up in their country.... a WALL would certainly help them in controlling these people as word gets back that it is almost impossible to get here ...your thoughts!