My data is from a nonpartisan government service and is far more recent.
From your study:
Most of the estimates that CBO reviewed did not include costs
associated with children who were born to unauthorized immigrants
in the United States because those children are U.S. citizens.
If those children had been included in the estimates, their
fiscal impact—particularly on education—would have been
higher.
However, the number of unauthorized
immigrants in some state and local criminal justice
systems adds significantly to law enforcement costs.
For example, in 2001, the United States/Mexico Border
Counties Coalition reported that law enforcement activities
involving unauthorized immigrants in four states—
California, Arizona, New Mexico, and Texas—cost some
county governments that share a border with Mexico a
combined total of more than $108 million in 1999.41 Of
the counties included in the report, San Diego County
incurred the largest cost, spending over $50 million that
year, or almost half of all estimated costs incurred by the
border counties. That amount represented about 9 percent
of San Diego County’s total spending ($541 million)
for law enforcement activities that year.
Also, while this "study" was done in 2007, most of the findings are from the late 90s and early 00s.
I assume all data used by the nonprofits goes back that far as well. If it doesn't, it should, or it's a pretty shallow analysis.
Good point about the education cost, I hadn't seen that, and it certainly changes things. Not sure about the border patrol cost, though- that's not something associated with illegal immigrant populations in-co untry burdening resources, it's enforcementthat's burdening resources. One could easily argue that the state could save itself
all that money by not bothering to police the borders, right? Seems like a different category of costs to me.