【正确答案】Most expels agree that the departure of many skilled workers from poor countries is a symptom of deep economic, social and political problems in their homelands and can prove particularly crippling in much needed professions in health care and education. The question of what can be done to lessen the damage is vexing and gets into difficult questions of whether to limit the migration of skilled workers. The immigration policies of rich nations have sought to attract highly educated professionals, to enhance their competitiveness and to fill gaps in domestic skills.