USA Vistor Visa
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.
Visitor visas are nonimmigrant visas for persons who want to enter the United States temporarily for business (visa category B-1), tourism, pleasure or visiting (visa category B-2), or a combination of both purposes (B-1/B-2).
Here are some examples of activities permitted with a visitor visa:
B-1 Business Visa:
-Consult with business associates
-Attend a scientific, educational, professional, or business convention or conference
-Settle an estate
-Negotiate a contract
B-2 Tourist and Visitor Visa:
-Visit with friends or relatives
-Participation in social events hosted by fraternal, social, or service organizations
-Participation by amateurs in musical, sports, or similar events or contests, if not being paid for participating
-Enrollment in a short recreational course of study, not for credit toward a degree (for example, a two-day cooking class while on vacation)