Parents visit USA on B2 CZH2006-05-18 17:00:46

My parents visited USA on a multiple entry B2 visa they obtained last year. They would like to use the the same visit to visit USA again. The visa will expire by early Nov. If they come shortly prior to the expiration date, will there be any problem at the US Custom? Did anybody have similar experience.

not at all, if your parents left

再入境时的居留期限入境当时时给。