I don't question this number, but I strongly suspect that this is more a function of the business sectors in which Mexican immigrants tend to work than anything else. I'll bet the differential between services received and taxes paid for the average all-American, heartland-type grain farmer is about ten times the value you see posted here for Mexican immigrants.
A couple of problems with this:
1) the "average all-American"... is a citizen as opposed to an ILLEGAL. While I personally would do away with social services for all people, Illegals should never get a dime of my tax money.
Although the United States’ welfare rolls are already swollen, every year we import more people who wind up on public assistance: immigrants. Many immigrants are poor; indeed, that is why they come here. The immigrants we admit are much poorer than the native population and are increasing the size of our impoverished population. As a result, the share of immigrant households below the poverty line (18 percent) is much higher than the share of native households that are poor (11 percent)—nearly twice as high. And immigrant households are more likely to participate in practically every one of the major means-tested programs. Immigrant use of welfare programs (21 percent) is 43 percent higher than non-immigrants’ use (15 percent).1
Each year, state governments spend an estimated $11 billion to $22 billion to provide welfare to immigrants.2