REgarding Visitor Visa

[akilamail]

My parents and sister are plannin to come to the US to meet me. I stay with my husband and kid in the US.

My sister is 24 years old. She is working as a physiotherapist. Can she apply for the visa along with my parents as a family? What all documents should she submit?

[peace999]

Young, unmarried ( I assume she is ) people coming on casual visits find it hard to get visitor visas. ( Potential immigrants).
Especially when the whole family is coming.
Advised that only parents apply . that way she will act as a family tie for the parents to come back to.