Expiration date on tourist visa or I-94?

BillTheButcher

Registered Users (C)
My mom has a tourist visa, B-1, and she came to visit me. Her visa expires on July 18th, but she entered the US on February 11, 2014. Immigration office stamped her I-94, which says that she can stay here until August 10, 2014, even though her visa expires on July 18th. Her flight is on July 17th, but I would really like her to stay few more weeks, because of the ceremony that we're gonna have at the end of July.

So, my question is, can she stay until August 10th? Will she have any problems later when she applies for another tourist visa?
 
A U.S. visa is only for entry to the U.S. The visa expires on July 18th, meaning she can enter as late as July 18th. Once she enters the visa is not relevant. How long she can stay is determined by the date on her I-94.
 
Top