It's a common left wing talking point too: we need to import more Mexicans because "they do jobs that Americans just won't do". See the comment just above mine,

It's a common left wing talking point too: we need to import more Mexicans because "they do jobs that Americans just won't do". See the comment just above mine, for instance. This talking point is correct and I can back it up with Census and BLS stats if you like. Admittedly, it's only right wingers who bring that talking point up when discussing welfare.