Parents on vistor visa with open return ticket

ranvir_usa

Registered Users (C)
Hi gurus,
Please let me know if there are any issues if my parents come on return open ticket. Also if they need to extend their stay beyond six month, do they have any risk of losing their 10 year multiple entry visa. They came 5 year ago and went back within 6 months.

Thanks very much for all replies.
 
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