to tammy2
Here is the risk:
When the case was processed by the INS officer, just at that day, no job offers for the applicant , and unemployed, and the case was approved. after one month, found a similiar job.
NOW, INS has never said AC21 is applicable after GC is approved.
If AC21 is applicable after GC approval, I think it is safe to inform INS the job change.
If inform INS, INS may revoke the GC because when the case was processed, no future job, and after GC approval, the petitionor should work for the original employer for some time(6 months)
Immigration law is ridiculous sometime.