Pf withdrawl

Hi There, My brother has worked in one of the MNC's for 3 years and 1 year back he went to USA for further studies. is it better to withdrawal the pf amount or keep it in the same account and

what are the consecquences if we withdrawal ?

how to withdrawl  ?

what happens if we not withdraw that PF amount

Thanks & Regards

Raviteja  B

bonakurthi.raviteja @ gmail.com