But what difficulties can tourists face when visiting Mexico during Covid 19 global pandemic? Are there any countries whose citizens are prohibited from entering Mexico today? Tourists may be denied entry at border crossings in the states of Sonora, Chihuahua, and Tamaulipas. There are no restrictions for Mexico Tourist Cardholders when crossing the Mexican border by plane. To get a Tourist Card using the Natvisa website, you will need the following documents a valid passport, information about your tourist route The passport must be valid at the time of the border crossing. Besides, a tourist must have a "back / onward ticket".