Found this link looking for the same backup you were.
http://anti-strib.blogspot.com/2006/05/mostly-correct-data-dismissed-by-pro.html
"Mostly correct data dismissed by Pro-illegal faction
Yesterday I posted a list problems attributed to illegal aliens in California and LA County. Not every Fact was 100% correct, nor were they all wrong. As usual there is some room for interpretation, but I stand by the general idea of the post."