challenge is a strong word, my friend! but go to nrn.org. i do not know the demographic data of nepalese living in 48-50 states.

americane, it is CIA factbook and it doesn't state the number of nepalese living abroad. it does give you other data.

there used to be a sajha user named Nepal_Hero. he gave the link once but it was 7-8 months ago. sorry.