US B1 Visa
Visitor visas are nonimmigrant visas for persons who want to enter the United States temporarily for business (visa category B-1), Here are some examples of activities permitted with a visitor B-1 visa :
Business Visitor Visas (B-1) If the purpose of the planned travel is business related, for example, to consult with business associates, attend a scientific, educational, professional or business conference, settle an estate, or negotiate a contract, then a business visitor visa (B-1) would be the appropriate type of visa for the travel. For more details on these and other activities that you can undertake while in B-1 status, visit Business Travel to the United States at, https://travel.state.gov/content/visas/english/business/%20business-visa-center.html.