Explained: Why H-1B is the most restrictive visa in US immigration

H-1B visa category is widely considered the most restrictive category within the US immigration system, primarily due to its annual numerical cap that limits the number of visas available, often leading to a lottery system for applicants, and stringent requirements for employers and potential employees. A new analysis from the National Foundation for American Policy (NFAP) reveals that, despite receiving 423,028 eligible registrations in fiscal year 2025, only 85,000 new H-1B visas were granted—representing just a 20% approval rate.