In the event, if my family and I move back to India before my son receives his certificate, can USCIS withhold his US citizenship on the basis of our move? On the form, there seems to be another interview!
THanks
As others have said above, the best advice is to complete the entire N-600 process while still in the U.S.
Although the instructions to N-600 say that it can be filed by anyone who derived U.S. citizenship, in practice there is currently no mechanism for doing so from abroad. The N-600 instructions say that the form has to be filed at the DO responsible for the applicant's place of residence, which, although slightly indirectly, implies that it must be filed in the U.S.
There was a recent thread about someone who tried to file N-600 from abroad, but the application was immediately returned, see
http://forums.immigration.com/showthread.php?318100-N-600-returned-back-%96-URGENT-%96-Pl-advise.
Interestingly, it appears that 10 years ago it was possible to file N-600 from abroad. There is an INS memo dated Feb 27, 2001 which says that at the time it was possible to file N-600 from abroad, and that an applicant residing abroad could file at any DO in the U.S.
http://www.ailc.com/publicaffairs/factsheets/chowto.htm
However, apparently, things have changed since then and now it is only possible to file N-600 while living in the U.S.
It is not clear what would happen if you and your son move abroad after filing N-600 but before it is adjudicated. But you really don't want to be taking chances here. Better have the entire process completed before moving abroad.