My daughter has a valid vistor visa to USA. She does not have a surname in her present passport & US visa. Her passport is due for renewal. We are now adding surname in her passport after gazette notification. My question is as to whether she can travel to USA with her current US visa which does not have any surname? If not should she apply for a new tourist visa & will she have to attend in person or use the drop box facility as her biometrics as an adult are already available..