Return ticket for B2 Visitor


My parents are planning to visit USA,during the visa interview they told the intendent length of stay would be 15 days, I dont remember if it was there on the DS 160 .

But I am planning to make them stay around 4 months ,where I would be booking tickets onward and return .

Is it really necessary to have a return ticket ?

Can the return ticket be after four months.?

This is the first time they are coming down.

You can select return ticket for a 4 month stay. It doesn’t matter if they said 15 calendar days during interview. US approves visa for multiple years for at most 6 month stay in one go; and so not impacted by whether it is 15 days or 1 month of 5 months.