B2 multiple entry?

My mother-in-law got her B2 yesterday. The visa page showed an "M" under entry, and the visa is valid for 6 months. I wonder if this means she can use this visa to enter the US for several times, as long as within this 6 months.

It seems that B2 is a single-entry visa. Is it normal that her B2 has multiple entry?

Thank you so much.

所有跟帖： 

• 回复：B2 multiple entry? -melissa_le- ♀ (30 bytes) () 12/13/2004 postreply 19:11:32

• 回复：回复：B2 multiple entry? -ften- ♀ (244 bytes) () 12/13/2004 postreply 19:21:49

• 回复：回复：回复：B2 multiple entry? -melissa_le- ♀ (62 bytes) () 12/13/2004 postreply 19:28:19

• 我父母来了两次，一次是6个月有效M，一次是3个月有效 -一次entry- ♀ (95 bytes) () 12/13/2004 postreply 19:29:05