去墨西哥时I-94的问题对于去墨西哥短期旅行究竟需不需要交I-94的问题很是疑惑，希望有经验的朋友分享一下。在CBP的官方网站上看到："If taking short trips (30 days or less) to Canada, Mexico, or the Caribbean Islands during the course of your visit to the U.S., hold onto your I-94 or I-94 (W); it should only be turned in wh...
