Sorry for deviating from the OP's question but a shout out to last poster's comments about if you are a Hippie things are lot easier.

My understanding is thus:
* Staying permanently back in Nepal with US citizenship should not be huge legal issue.
* Livable Interest Income on Cash and Liquid assets below certain optimal amount is laced with Red Herring (e.g. Cash in B Categories Banks with lesser amount on depositor's insurance coverage, VC investments in Nepal, question of affordable real-estate investment for constant rental income, interest rates being at par with inflation rate etc)
* Quality education for kids are expensive.
* Expatriating your surplus income from Nepal to US is almost impossible under current law.
* Where the heart is, mind follows.
* Mero Pyaro Okhaldhunga. Siddhicharan Shrestha.
* If you always make the right decision, the safe decision, the one most people make, you will be the same as everyone else. Paul Arden.


https://www.sc.com/np/assets/pws/images/page/interest-rate.html