Embassies or Consulates in the U.S. - U.S. Department of State
List of Mexican consulates in the U.S. - U.S. Department of State
Retrieving Your Electronic I-94 - U.S. Customs and Border Protection
If you travel outside the U.S., please make sure that you locate all of your documents prior to your departure. If you travel without proper visa documentation on your person, you may face complications when re-entering the U.S.
To help answer some of your questions about traveling outside of the U.S., the ISSO has prepared the following information: