详情见内

1. As of the 1st of May 2010, holders of valid visa of the United States of America (any nationality) shall not require visa to enter Mexico.
2. 
   
   Legal Permanent Residents of USA, Canada, Japan, United Kingdom and do not require visa for enter Mexico.
3. 
   
   Holders of Diplomatic or Official passports do not require a visa to enter Mexico for 90 days.
4. 
   
   Official/Clergy of Religious organization require prior authorization granted by the Immigration Authority of Mexico (Instituto Nacional de Migración, INM).
5. 
   
   Visas are normally issued in one working day when formalities are duly completed.
6. 
   
   The Consular Section issues multiple entry long term visas。本规定来源: http://lexpeakimmig.blogspot.com/2010/05/image-courtesy-www.html#!/2010/05/image-courtesy-www.html                                                                               另外，你再恰驻美墨使领馆确认一下为妥。