In most cases, a foreign national who wishes to come to the United States must first obtain a visa. There are two types of visas: a nonimmigrant visa for those who wish to enter the country on a temporary basis, or an immigrant visa for those coming to this country for obtaining permanent residency. A visa allows a foreign national to travel to a port-of-entry in the United States, requesting permission of a U.S. immigration inspector to enter the U.S.
The "visitor" visa is a nonimmigrant visa for foreign nationals who wish to enter the United States temporarily reasons that concern business (B-1), pleasure or medical treatment (B-2), or combination of both (B-1/B-2)
A B1 visa is issued to business visitors who wish to enter the U.S. for a temporary period to engage in legitimate business activities, such as meetings, conferences, negotiating contracts and consultations. B1 visa holders may not work in the U.S. and may not be paid from a U.S. source. Individuals, who seek to work in the United States should apply for a work visa, such as an H-1B, TN or L-1 visa. If your intention is to enter the United States for pleasure or medical treatment, please click here for B-2 Visa information.
The Definition of a B-1 Visa:
The visitor visa is a nonimmigrant visa for individuals desiring to enter the United States temporarily for business (B1 Visa).