My name is [person inviting] a lawful permanent resident alien residing at [ Address of inviting].
We humbly request the approval of my [relation to the person your inviting] [ (name of person your inviting) ] tourist (B-2) visa in order to allow him to visit me in the United States. [ name of person your inviting ] is a law abiding citizen of [country person your inviting is residing ] with strong business and personal ties there.
Upon successful approval of his visa [ name of person your inviting ] plans to spend [length of stay] in [State person will be staying], where I will be responsible for all his accommodations and expenses during his vacation in the United States. At the end of his [length of stay] vacation he will return home to [country/town person your inviting is residing ] .
[ name of person your inviting ] will be presenting this letter to you, together with other evidence of his ties with [country person your inviting is residing ] with an assurance that he will return prior to the expiration of his stay in the United States.
Your kind consideration to this request will be greatly appreciated.
Yours Truly,
[person inviting]
[Address of person Inviting]
[Phone no of person inviting]