i believe it is closer to 12,000,000 not 20,000,000. and I would say have them pay taxes before we give them aid instead of the other way around. and no democracy in the world would deport all of them... except maybe Mexico, but they have a big problem with those people from Guatemala (Mexicans are encouraged to beat, rape, shoot, and steal from illegal immigrants living in Mexico)

the main reason to tighten up the borders (look it's plural) is for our own safety. i would have to assume that Canada has better security than Mexico though, therefore Mexico should be the first priority. also, in Canada the terrorists will freeze their desert lovin nuts off...

a statistic said something along the lines of 40% of all weapons people attempt to cross the Mexican border with actually make it. this includes weapons of more impact than small arms, such as explosives.