> There is nothing special about US in itself that makes it lucrative for any one to stay.
Aside from increased average wages, more amenable environment to starting businesses, a gigantic pool of natural resources, no (current and past) threat of military invasions or coups, and so on.
You're proposing that the only reason people immigrate here is because they heard about the US on the TV. We can argue whether it's "nicer" to live in Madrid or New York City, but most would-be immigrants and past immigrants came here to escape famine, impoverishment, oppression, and the like.
Aside from increased average wages, more amenable environment to starting businesses, a gigantic pool of natural resources, no (current and past) threat of military invasions or coups, and so on.
You're proposing that the only reason people immigrate here is because they heard about the US on the TV. We can argue whether it's "nicer" to live in Madrid or New York City, but most would-be immigrants and past immigrants came here to escape famine, impoverishment, oppression, and the like.