B1/B2 visa and visit US again

My mom got a B1/B2 visa and visited USA in a tourist group. Now she'd like to come and stay with us for a couple of months without getting a new visa. Does anyone have similar experience? Is there anything special that we need to pay attention to - eg should the date of returning China be about 2 months from coming to USA or does it not matter? Thank you in advance!

請您先登陸,再發跟帖!