Visa appointments in India for this week and next have been shifted to March, causing confusion for travelers and business visitors. Several H-1B and H-4 visa appointments have also been canceled as social media vetting starts on December 15. The US Embassy in India wrote, "ATTENTION VISA APPLICANTS - If you have received an email advising that your visa appointment has been rescheduled, Mission India looks forward to assisting you on your new appointment date. Arriving on your previously scheduled appointment date will result in your being denied admittance to the Embassy or Consulate." Immigration lawyer Steven Brown said, "Mission India confirms what we have been hearing. They have cancelled a number of appointments in the coming weeks and rescheduled them for March to allow for the social media vetting." He added, "Note the ones I’ve seen are rescheduled for March. I’m sure it’ll be all over the place." Meanwhile, H-1B and H-4 visa holders in the US are also experiencing sudden visa revocations. Attorney Emily Neumann said, "We are seeing more prudential visa revocations for H-1B and H-4 holders who had a past interaction with law enforcement, even with no conviction. Many of these incidents were already disclosed and cleared in earlier visa stamps. A revocation does not affect lawful stay in the United States, but it means the issue will be reexamined at the next visa appointment. Hard to see how this is an efficient use of government resources when the incident was already previously vetted."