How Do Emigrants Progress Over Time?

Any question that has to do with how a person does overtime requires a panel data. You require to link that person over er time. And so it's only when you are able to link same person overtime that you can see what happens with the person when he first arrived, and then 30 years later, and then what happens to his child. Thet is really, i think, a challenging question that to take quality antoacount accurately is hard to do. I am much more optimistic that there's much more mobility in the united states than children.