That's new to me, as well, hearing native born mexicans deride 'wetbacks'. Turns out the nouveaux are cutting into their state bennies.
This particular lady's "benefits" consist of putting up with rooms full of 5 to 12 year old kids all day. Her hubby, whose has a Hispanic surname as well, but whose family's residence in Texas goes back to when it was part of New Spain, is a retired Lt. Col. U.S.Army Reserve. He's also a civilian employee of the Department of the Air Force. Her father earned his keep, and provided for his family, by barbering to the Navy pukes in Kingsville.