DOS has still not released a list of countries whose nationals are affected by these requirements. It might be advisable to call the post to check on the appointment if a client was born in, or has resided in, a country that you think might be on the list and has a scheduled appointment in Canada or Mexico. Note, also, that some members have reported that female clients from some of these countries have been subjected to the additional clearances (some news reports had indicated that only males would be subject to the checks).