Last week, the U.S. Department of State experienced technical issues with their passport-visa system. Please see the statement below from the U.S. Department of State concerning the effect:

"The Department of State Bureau of Consular Affairs continues to make progress restoring our nonimmigrant visa system to full functionality. Over the weekend, the Department of State implemented system changes aimed at optimizing performance and addressing the challenges we have faced. We are now testing our system capacity to ensure stability. Processing of immigrant visas cases, including adoptions, remains a high priority. Some Embassies and Consulates may temporarily limit or reschedule nonimmigrant visa interview appointments until more system resources become available to process these new applications. We sincerely regret the inconvenience to travelers, and are committed to resolving the problem as soon as possible. Additional updates will be posted to travel.state.gov as more information becomes available."

The most up-to-date information can be found at usvisas.state.gov. Additional information and a timeline of events can be found on NAFSA's website.