Xikang, theres a few things that you may want to know 1. in the US, you need to have a budget for healthcare, health insurance is a must, one simple surgery can cost tens of thousands of $ 2. buying treasuries and use the inteerests to fund your lifestyle can be very risky, the main problem is inflation, 30 years from now, the $50k will only have the buying power of $25K 3. kids are very expensive to raise in the US, even if you go to public schools, sports, tutoring, summer camps, clothing, etc cost $$$ 4. treasury intersts are fully taxed, which means your $50k interest will be less (sometimes a lot less depending on your total earnings and state) 5. the most important one, how are you going to get legal residency in US?
Rarely older generation can afford the extremely high medical cost in the U.S.😑 Lots of them already sold their properties and run out of their country.