Before around 2012 Singapore didn't do this; practically anybody could go there if they could get a job. In the early 20th century America didn't do that (apart

Before around 2012 Singapore didn't do this; practically anybody could go there if they could get a job. In the early 20th century America didn't do that (apart from banning Chinese immigrants); there's a reason the following is inscribed on the statue of liberty: "Give me your tired, your poor, Your huddled masses yearning to breathe free, The wretched refuse of your teeming shore. Send these, the homeless, tempest-tost to me, I lift my lamp beside the golden door!" Sweden essentially still lets anybody in who has a job offer (https://www.migrationsverket.se/English/Private-individuals/Working-in-Sweden/Employed/Work-permit-requirements.html https://www.migrationsverket.se/English/Private-individuals/...): "to obtain a work permit you must * have a valid passport * have been offered terms of employment that are at least on par with those set by Swedish collective agreements or which are customary within the occupation or industry * have been offered a salary that is at least on par with that set by Swedish collective agreements or which is customary within the occupation or industry * you must be offered a position that will enable you to support yourself. In order to satisfy this support requirement, you need to work to an extent that will result in a salary of at least SEK 13,000 [around $1500USD] per month before taxes * have an employer who intends to provide insurance covering health, life, employment and pension when you begin to work."