The B-1 nonimmigrant classification (including admissions under the Visa Waiver Program) is appropriate for foreign nationals who are entering the US on a temporary, limited basis to engage in legitimate business activities provided that they should not receiving remuneration from a U.S. source except for reimbursement for expenses while in the US The Department of State (DOS) regulations define “business” as “conventions, conferences, consultations, and other legitimate activities of a commercial or professional nature” but not local employment or labor for hire. The DOS’ Foreign Affairs Manual (FAM) further specifies activities, such as engaging in commercial transactions, contract negotiations, and litigation.