A country’s visa policy is a rule that states who may or may not enter the country. The policy may allow passport holders of one country to enter visa-free but not the passport holders of another country. Most visa policies are bilateral, meaning
that two countries will allow visa-free travel to each other’s citizens, but this is not always the case. For example, Canadian passport holders may travel to Grenada visa-free, but Grenadians must apply for a visa in order to travel to Canada.