The Department of State (DOS) announced on February 1, 2017 that is has stopped scheduling appointments and halted processing of immigrant visa applications for people who are nationals or dual nationals of countries covered by Trump’s Executive Order titled “Executive Order on Protecting the Nation from Terrorist Attacks by Foreign Nationals” (summarized here).
Syria, Iraq, Iran, Libya, Somalia, Sudan, and Yemen are currently on the list, and rumors are swirling that other countries may be added soon. This stopping of interviews is considered a temporary measure, but at the moment, no rescheduling is taking place.
The affected visa categories include family- and employment-based permanent-resident (immigrant) visas, as well as fiancé (“K”) visas.
When rescheduling or new scheduling begins, expect to be notified by either the National Visa Center (NVC) or the U.S. embassy or consulate in your country.
If you already received an interview appointment notice and haven’t yet attended the required medical exam, DOS advises you to cancel your doctor appointment. The doctor’s report is valid for only six months, and no one can predict when your visa interview will eventually be held.
For all other steps, however, assuming you continue to be interested in your immigrant visa application, you should continue to respond to requests from the NVC or consulate, including paying your fees and submitting filled-out forms and supporting documents. (See What Happens Between I-130 Approval and Consular Interview for further description of the normal process.)