I searched on Google for "mexico visa", and the first hit shown to me was the following official site of the Mexican government:
A. Effective March 1st 2010, all visitors traveling to Mexico either by air, land or sea are required to present a valid (non-expired) Passport or Travel Document from their country to enter Mexico.
B. With the purpose of facilitating and promoting travel to Mexico, effective May 2016 all those foreign nationals, regardless of their nationality, visiting Mexico for tourism, business or transit are NOT required to obtain a Mexican visa IF they hold a valid (non-expired) Visa or Permanent Residence of any of this countries: United States of America, Canada, Japan, United Kingdom or Schengen area (European Union).