1. For my parents, how much bank balance need to show for 2 people for 2-3 months stay? (>5 lakhs, >10lakhs, >20lakhs)
- Showing bank balance in india does not make sense. You should be able to convince the immigration officer that you can take care of your parents when they are visiting US.
2. Does my brother can sponser my parents trip? How much bank balance is needed in this case?
To my knowledge your brother cannot sponser (if he is living / employed in india). You/spouse are the only person who can sponser them.
3. If we sponsor how much bank balance is needed in $?
-When I sponsered my mom (not dad) I showed $5K (in 2003) and we were good to go.
4. Can we combine our and parent's income and show the bank balance?
- the income should be only yours/spouse and in $$$.
My response is only to my experience/ knowledge. Please refer to attorney if more details are required.Thanks.