Thanks fist for those who answer my questions:
1).My parents are visiting us in U.S.They arrived U.S last month.Their B2 visa is six months valid and Mutiple entry.If they like to visit Mexico for a week.Do they still need Visa to reentry to U.S.A?I think no.But I like to make sure of it becasue of the importance.
2).I do not know which is better? Mexico or Canada? Or other countires nearby.
1).My parents are visiting us in U.S.They arrived U.S last month.Their B2 visa is six months valid and Mutiple entry.If they like to visit Mexico for a week.Do they still need Visa to reentry to U.S.A?I think no.But I like to make sure of it becasue of the importance.
2).I do not know which is better? Mexico or Canada? Or other countires nearby.