Upvote:4
Googling lost visa site:https://in.usembassy.gov immediately finds the relevant page which has this to say about Lost or Stolen Passport or Visa:
You must report the loss of your passport and visa to the local Indian Police and obtain a police report. Please report the loss of the visa to the Fraud Prevention Unit at: [email protected].
Lost or stolen U.S. visas cannot be replaced. For replacement of a visa, you must apply in person at a U.S. Embassy or Consulate. When applying for the replacement of a visa, you will need to explain the loss of your passport and visa.
If you have already reported your visa lost/stolen to the U.S. Embassy or Consulate, and then you later find your misplaced visa, please note that the visas will be invalid for future travel to the U.S. You must apply in person at the Embassy or Consulate for a new visa.
Also note that the Apply for an Expedited Appointment page explicitly says "Travel for the purpose of attending weddings [...] does not qualify for expedited appointments". It does not mention reissuing visas at all so it is not exactly known whether you'd qualify but since it lists the legit reasons for an expedited appointment, my opinion -- and I am just a random stranger on the Internet -- is that you don't. Other embassy pages on the same topic with slightly different wording for eg the London one says "An appointment for an interview may be scheduled online at" and surely it would mention if expedited appointments are available for this purpose. Cancel your travel and beg the airline to refund your ticket. There's nothing you can do. Sorry. Maybe this sounds cruel but I do empathize with you, my nephew is the only light in my life and he also lives an ocean away and I'd be absolutely heartbroken if I couldn't attend such an important event so yes, I fully understand your situation but, alas, it seems there is nothing you can do :(