Documents while travelling on visitor visa ?

[Nitu1]

Hi,
my parents got visitor visa and they will be traveling soon. Could you please let me know what documents they need to carry with them ?
Thanks,
Nitu

[immihelp]

read https://www.immihelp.com/usa-visitor...sor-documents/

and

https://www.immihelp.com/usa-visitor...tor-documents/