Sajha Mitra,
Recently, hajur harule aaphano Buwa-Aama haru lai USA ma ghumgham or arrival of New member in family bhane ra invitation garnu bhayeko cha bhane please hajur haru le gareko process step wise dinus na. Hajur haruko sewa lai dherai dherai dhanyabad!!!

I did invite my parents just to visit America, no arrival of new member. They got interviewed last week and got visa. I had sent the following documents:
1. Letter to consular requesting they grant visa to my parents (signed by me and my spouse with notary)
2. Employment verification letter (mine 25k/yr & spouse 35k/yr)
3. Our 6 months bank statement (had around 20k savings)
4. Copy of my PR and wife's US passport

Back home, my father included his bank statement (around 6 lakhs) although not required, he included anyway.

I didn't include:
1. Invitation to my parents( who will write formal invitation to their own parents)?, d
2. Tax returns (they are here for just visit, not as immigrants)