The law states that you cannot hold 2 US visas simultaneously. Hence, I doubt they will process 2 visas parallely. I too suggest that you just wait for your immigrant visa.
QUOTE(ELW @ Nov 28 2007, 08:20 AM)

QUOTE(faal4anisa @ Nov 27 2007, 03:19 PM)

The only thing is possible that u had already had a visit visa when u were filing your case otherwise i think it is extremely difficult to get visit visa when your case is pending and it can bring suspicion in the mind of the consul officer about your case and can damage u so better to wait when u get your immigrant visa.
Agreed. I have only heard of denials of tourist visas while immigration visas were pending.