Not necessarily! Most requirements for a visa are based on trade and commerce treaties between nations. Other nations issue visas based on historical or diplomatic relations. Citizens of dependent territories or former colonies may also be exempted from visa requirements. For example, many countries allow passport holders from the US to enter their countries without a visa because of long-standing diplomatic relations and reciprocal visa waivers. Before traveling, you should confirm if the country you’re traveling to requires a visa and then prepare yourself.