谢谢老师!
我也是打算让他们7/22前回去。
那么一个新的问题是:应该会在7/22之后才收到最后结果。如果拒了,那么他们的十年签证还有效吗?还是作废了? -No problem. The visa will still be valid as long as they leave US during the I-539 application for B-2 extension (i.e. before it is denied, if any).