"Imagine that it is your professional duty to report a cost-benefit analysis of liberalizing immigration policy. You wouldn't dream of producing a study that counted 'men only' or 'whites only,' at least not without specific, clearly stated reasons for dividing the data.
"So why report cost-benefit results only for United States citizens or residents, as is sometimes done in analyses of both international trade and migration?"Full piece. The assumed position is often quite the opposite.