my friend surrender his greencard in 1999 (chinese at that time dream to come to USA and have many unrealistic thought about USA life), and he already made 1+ million $$$ "net profit" in business & investment he started up. He continue 10+% in net-profit millions of USA $$$ from that time until now....
Be a USA permanent resident/citizen only bother one eventually in Tax burdon.
This WWW such few people realize life is a journey and I see them talking about Ph.D or job strategy in office at their age of 35+,40, 50..., hmmm