immigration - VISITOR VISA
Overview
Generally, a citizen of a foreign country who wishes to enter the United States must first obtain a visa, either a nonimmigrant visa for temporary stay, or an immigrant visa for permanent residence. The visa allows a foreign citizen, to travel to the United States port-of entry and request permission of the U.S. immigration inspector to enter the U.S. The "visitor" visa is a nonimmigrant visa for persons desiring to enter the United States temporarily for business (B-1) and for pleasure or medical treatment (B-2).
As examples, if the purpose of your planned travel is recreational in nature, including tourism, amusement, visits with friends or relatives, rest, medical treatment, and activities of a fraternal, social, or service nature, then a visitor visa (B-2) would be the appropriate type of visa for your travel.
As additional examples, if the purpose for your planned travel is to consult with business associates, travel for a scientific, educational, and professional or business convention, or conference on specific dates, settle an estate, or negotiate a contract, then a business (B-1) visitor visa would be the appropriate type of visa for your travel.
Should you need additional information about business related (B-1) visitor visas, select:
http://travel.state.gov/visa/temp/types/types_1262.html#4