Should two way ticket is Mandatory on B2 Visa ???

[bobkris]

Hi,

My parents got the Visa (B2) and planning to travel in next month.
I have a question that should we take two way ticket if the person is coming on Business (Tourist) Visa.

Problem is, after couple of months I don't know where my project will be. If I am at different place at the time of my parents leaving US then it would be a problem for me.

So I am planning to take one way ticket ? What would you guys suggest ?

Thanks

 

[rocky7]

Two way ticket is the best, but it is not required.