It is a visa for non-immigrants who wish to visit the United States temporarily. The purpose of their visit is related to business activities. The B-1 and B-2 visas are often issued together.
This is the tourist or visitor visa.
The Board Crossing Card, also known as the “laser visa”, is valid for ten years. It is a combination of the B-1 and the B-2 visas. It is requested mostly by Mexicans who travel to the border region.
There are thirty countries (among which we find Chile and Spain) whose citizens are allowed to visit the U.S. without a visa. This is only possible when the purpose of the travelers is tourism or attending a business meeting, a congress or a fair. However, if they travel by plane, they must hold an Electronic System for Travel Authorization (ESTA).
The ESTA is issued by the Department of Homeland Security, and it is an electronic system that allows people to request, by surfing the web, an authorization to visit the U.S. It is additionally based on the Visa Waiver Program (VWP)