Everyone wants to be here hence Jealousy is a main factor in people in other countries ragging on America but if given a chance to move here they would take it in a minute.
This is not true any more. Back in 1880 my great grandparents emegrated to the USA from Scotland because the ordinary people could work hard and make something of their lives in the USA. Back in the old countries the ruling classes owned the capital and the ordinary man was little more than a paid slave. My great grandparents came back to Scotland in 1905 with my baby grandfather, having made a lot of money in the construction industries around New York. Great Grandfather became an owner of capital back in his home country and continued to capitalise on the success which had started for him in the USA.
130 years later the USA now has a new ruling class with 1% controlling 99% of the capital. They have gone the way of the old countries without the social benefit the old countries now have.