回複：想利用cruise給持B-1/2簽證的父母延期的同學請注意：

As of my understanding, it doesn't say that you can't come back to US after the expiration date of the initial I-94 with a valid multiple entry B-2 Visa.

What is the difference of re-entering into US after the expiration date of initial I-94 card by going back to China and traveling to Canada?

Thank you very much for your insights.