I'd love to see some source for this, because from what I've seen, 59% of undocumented immigrants receive some form of welfare (the state of California spends roughly $10 billion a year alone on this) and documented migrants are at roughly the same rate, double the native born population's rate of 28%.
Not hard to find, here is a right wing, anti-immigrant anti-service source:
https://www.cato.org/blog/immigrants-still-use-much-less-wel...
> I'd love to see some source for this [proceeds to throw out a bunch of source-free numbers]
I looked up the source for these numbers.
It's the Center for Immigration Studies, and they are notorious for being a right-wing think tank used to dress up up anti-immigration policy using misleading statistics.
How notorious are they? Well, they are listed as a hate group with the Southern Poverty Law Center[1].
The numbers you're citing aren't 'welfare,' the biggest thing is using the education system. The thing that, long term, makes they into productive taxpayers. CIS doesn't figure the long-term benefits into their numbers because that would destroy their thesis.
[1] https://www.splcenter.org/resources/extremist-files/center-i...