Returning to USA after 3yrs having Green Card

[nirsam]

My Parents has Green card but after staying for 3months in USA they went back to home country (India) as my mom was not feeling well n underwent treatment in India. Its been 3.5yrs they are there in India n now want to come back to USA.


My questions :

1. What will happen if they try to enter in USA after 3.5yrs ? We dint apply for Re-Entry permit that time.
2. Will they allow to board the flight at Home country (Indian) airport and at any layover airport??
3. Will they give entry at US border ? (We dont hv Re-entry permit or anything but we have documents to show that my mom was sick and was under treatment in USA as well as in India )

Could anyone suggest/ give inputs on this if someone has gone thru this kind of situation?

Thanks.

[JoeF]

Their GCs are invalid. They can not use it for travel.

You would have to sponsor new GCs for them.

[pontevecchio]

Most likely the GC is considered abandoned. They certainly CANNOT travel using that card. 

You will  have to reapply for their GC. They may like to explore Returning resident visa and discuss it with a lawyer. Presumably no tax returns were filed by them over the last 3 years? Do they own property here?