On all four occassions, USCIS’ stated reason for the refusal was that the fathers failed to submit photos and Forms G-325A (biographic information) with the petitions. Each time, I’ve contacted USCIS to explain that such materials aren’t required by the official instructions. (A spouse’s immigrant petition does need these materials). And each time, USCIS has agreed to follow the official instructions, accepting the re-submitted petitions.
These four fathers must only be a drop in the bucket. Many others have undoubtedly been refused for the same erroneous reason. If these fathers are able to follow USCIS’ official instructions, USCIS Beijing should train its staff to do so too.