Parents Visiting USA 2nd time

[Arya_v]

Hi, my parents have multi entry visa for 10 years. They are coming here in USA for 2nd time.

Do they need invitation letter again from me for this time?

What other documents is needed for them to carry for immigration?

Thanks,

[jnk]

You don't need to send any documents.

Please read second paragraph ( Subsequent visit) at,

https://www.immihelp.com/travel-preparation-for-usa-visit/