Tell me one reason - just one - why ANYONE in the world would be jealous of a country that kills thousands of its own citizens every year, where nearly half its population is so poorly educated that they believe in creationism and have almost no idea of the rest of the world. A country where should one wish to employ someone one must first find someone capable of writing a letter of application! A country in which many of its population consider black people to be actually inferior. A country in which whole governments pass or fail because of non political affairs like religion and abortion. A country that invades countries and kills innocents. A country imbued with violence and confrontationalism from its school kids to its government.
No, my friend. (and this is not just forum crap) very few people, and particularly not me, are jealous of America. Like many of your countrymen, you need to stop kidding yourself. Many people, however, and I count myself as one, are quite interested in America rather as we might be interested in North Korea or Mars or spiders.
Don't tell me people flock to live in America, they flock to live in many countries particularly the UK. Don't tell me about China because I know full well and that does not make American actions (or inactions) justifiable.