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- The Henley Passport Index ranks the most powerful passports in the world for visa-free travel.
- Singapore is in the top spot with its passport, which allows holders to travel to 195 countries.
- The US passport can access 188 countries, behind passports from 27 other countries.
Thinking of visiting China, India, or Venezuela with a US passport for your summer vacation? Not so fast — or at least not before securing a visa. Some of the best wonders of the world require US citizens to obtain a visa before take-off, an inconvenience in planning that long-awaited international getaway.