Reply #30: Denmark is member of Visa-Wavier Program [View All]

Denmark is a part of the Visa Waiver program. Which is why they can get in without a visa. The requirements and negotiations for joining the program are with the government of the United States. The countries exchange information electronically on those entering rather then using a visa.

The U.S., Mexico, and Canada all have entry requirements. This is not a practice that is singular to the U.S. government. They are distinct and separate countries, and each chooses its own practices, though they do work together and negotiate some parts of it.

Mexico, Canada, and US are working on a similar program for travelers between those countries.

Visitors from Canada currently can show a variety of documentation to enter the U.S.
Visitors from Mexico can have either a visa or a border crossing card also called a laser visa.


Is this what you are referring to for U.S. citizens traveling to the Mexican border zone?

Tourist Travel: U.S. citizens do not require a visa or a tourist card for tourist stays of 72 hours or less within "the border zone," defined as an area between 20 to 30 kilometers of the border with the U.S., depending on the location