I thought I might post some numbers, since I am a big fan of them regarding to this debate. I already am aware that most (here) who will disagree with them will automatically discredit them; fair enough, I've never really found numbers on the subject, so I'm giving them ball park credibility.
Plus or minus time (I'm rounding down on the figures).
-Illegal immigrants in the US 22 million +/- (by my awesome math skills I concluded that is roughly 7% of the population.
-Non-Mexican illegals in US 550,000+/- (2% of illegals)
They post some cute numbers about money wired out from USA to Latin America/South America, really irrelevant.
-Cost of social services paid to illegal immigrants since 1996 just south off 400 billion.
-Number of illegal's children in America's public school system north of 5 million
-Cost of educating illegals since 1996, north of 160 billion dollars US.
-Number of illegals incarcerated in US +/- 420,000.
-Cost of alleged incarcerations is fairly low at a cool $24 billion since 1996
-Skilled jobs provided to illegals, which I don't know how to define, is listed at +/- 11 million.
-And Anchor babies, which I assume would be illegal's naturalizing kids in the US, is listed at +4 million.
Website is
Immigration Counters.com - Live Counters, News, Resources, they post some interesting numbers. Like how Mexico has an unemployment rate of +/- 5% which later verified at Cia.gov, there poverty rate is at 18% which is only 6% higher than the US. Apparently they are also home to the Richest man on the planet. Oh and switching gears but hilarious none the less America's public debt is 52% of the GDP.