Planning a trip to the USA? Understanding the different types of US visas is crucial! We'll explain what a USA visa is and why it's your official permission slip to enter the country for a specific reason and time. Learn about the diverse range of Nonimmigrant Visas for temporary stays, including: Visitor Visas (B-1/B-2) for tourism, business, or medical treatment. Student Visas (F, M, J) for academic, vocational, and exchange programs. Temporary Work Visas (H, L, O, P, R, TN) for various employ