Visa documents when travelling to USA

[pdayal]

My parents are travelling to USA in May. Should they carry the documents (for Port of Entry immigration check) they took with them when they went for the Visa Interview? I thought just the Passport and Visa is good enough.
My Dad is coming for six weeks and my mom for four months. My Dad still works so he has to go back early.

Thanks
Priya

[dahlia]

Passport with Visa and return tickets :-)

carry inivitation letter just in case..

[ramkumarkoditala]

and refer http://www.immihelp.com/visitor-visa/ for more details
HTH
RK