USCIS has indicated that some local USCIS office personnel are being pulled out of the local offices to go to US Military bases to help process the incoming Afghan Refugees. In the local DC Field Office all September (or, at least, many) appointments have been cancelled so that personnel can help with the refugees, and the same may be true in other field offices. If you received a cancellation notice recently, this very well may the reason.
It is also likely that, at least those cases that require an interview, such as family based cases, may take a little longer to have those interviews scheduled because of this need, so keep that in mind as well.
In other news, Immigration Briefs now has a podcast as well. You can find us under the name Immigration Briefs on iTunes, Spotify or in other podcast feeds. If you cannot find it in your favorite podcast player, let me know via email@example.com. Thank you.