I read a while back the Social Security people when they find Mexicans who have used a legal citizen’s SSAN, the money said Mex earned is bundled up and sent to the Mexican government TO THE Tune of 100’s of millions a year!
They claim “asylum” b/c this triggers hefty monthly SS checks-—practice dates back to post-WW 11.
And don’t forget SSI payments——most of them fake illness for themselves and usually ADD for the snot-nose kids.