I know some Nepali who owns resturant here in Nepal and Colorado they do these stuff. 

What i know they are doing is they run social service program to raise donation in co ordination with American with American University in  USA. Those American citizen lands here in Nepal so the trick is someone gives them the same equivalent amount here in Nepal to help the people at xyz village. While the money of American donation will stay in USA on the account you want to deposit. The rest Nepali currency goes on the pocket of programs where they want to donate. No one gonna doubt as donation are not supposed to be taxed in US.