Methodology
We republish official Adjusted B Visa Refusal Rates as published for each fiscal year and compute simple year-over-year percentage-point (pp) and percent changes from consecutive published years. Ranks order nationalities by the published rate for the selected year only — a neutral ordering, not a judgment. Wait times are shown exactly as published (Average Wait Time and Next Available Appointment are separate fields). We do not estimate individual approval odds. History snapshots of wait-times tables are archived when the official page updates.