媽媽上一次在美國呆了5個月，然後回中國呆了7個月，簽證剛好過期，因為這邊又需要老人過來，她能否立即去簽證B visa ?
-No law limit that.But because her stay in China is less than 0ne year since she came back from US, it may be negative to her visa application again. But may just try to see how lucky she is.
在國內呆的時間是否夠長？簽證剛過期， 能否立即去簽？ （注：因為背景調查過2次，所以不能銀行代簽） 謝謝.
