For multiple entry Visitir visa- transit visa required or not

[bobbys]

Hi
My mom has 10 year multiple entry Visitor's Visa.
She is coming to US from India via British Airways next month

Does she require a Transit Visa since she needs to change her flight in London

Any inputs appreciated?


Thanks

**************************
AD Nov 15
Plastic: waiting

 

[wong561hb]

I don't believe she needs a transit visa.