Have you ever talked to anyone who’s done this? Are you aware of the obstacles involved in leaving the country you grew up in for one you may not have any connection to, whose language you may not speak, then get a job, then apply… I suspect not. It’s not like Amazon prime. Many people come here “illegally” because American foreign and economic policy has made it impossible to live in their country. And many of us living here now are descended from people who came here in conditions that would now be considered illegal (some of my grandparents and great grandparents among them). I suggest you examine the history of migration more carefully.