...the next time you apply for admission to the U.S., Customs and Border Protection (CBP) may conclude you remained in the U.S. beyond your authorized stay. If this happens, your visa may be subject to cancellation or you may be returned immediately to your foreign point of origin.
美国官网:
https://help.cbp.gov/app/answers/detail/a_id/752/~/i-still-have-my-i-94
下次您申请加入美国时,海关和边境保护局(CBP)可能会认定您在授权逗留期限之后仍留在美国。 如果发生这种情况,您的签证可能会被取消,或者您可能会立即返回您的国外原籍地。
...the next time you apply for admission to the U.S., Customs and Border Protection (CBP) may conclude you remained in the U.S. beyond your authorized stay. If this happens, your visa may be subject to cancellation or you may be returned immediately to your foreign point of origin.