Hello all,

My parents entered USA (B1/B2 Visitor) on Aug 7th, 2015 (I-94 validity date till Feb 2016). They have a valid Canada Visa and would like to go to Canada on Sept 29th for 7 days and come back to USA on Oct 8th. Their B1/B2 Visa is a Multiple entry Visa - valid for 5 years...