That Mexican vacation is all booked and it is only one month to go until nothing but sun, surf, bikinis, and margaritas. Everything is planned, everything is taken care of, unless, wait…do I need a passport to Cancun? This question is not as simple as it seems, and although the answer is almost certainly yes, there are a few different factors to consider.

The obvious answer is that since Cancun is in Mexico, and since Mexico is not in the U.S, then yes a passport would be necessary for a Cancun vacation. However, it was not until very recently that passports were necessary for travel to border countries, and even now they are not universally necessary. The type of travel dictates whether or not a passport is required.

In order to figure out if you will need a passport to Cancun, it is first important to understand the new passport laws. As of June 1st, 2009, passports are required for travel to Mexico, Canada and nearby Caribbean Islands. These laws apply to air, land and sea travel. Prior to these laws, passports were not required for land and sea travel to Mexico. International Mexican travel only required a valid driver’s license or other government issued identification.

Anyone that is now traveling out of the United States to areas such as Cancun will almost always have to have a passport now. The new laws require that all land, sea and air travel passengers have a valid US Passport to re-enter the United States when coming in from any destination. Of course, there are always exceptions to the rule.

Travelers on cruises to certain international destinations are not required to carry passports provided that the cruise is deemed “closed loop.” A closed loop cruise is any cruise that starts and finishes in the same port or same port country. However, it is important to note that these closed loop exemptions only apply to cruises that begin and end in the United States, and only on cruises that visit certain international countries.

Approved international countries include: Mexico, Canada, Bermuda, the Virgin Islands, and select Caribbean Islands. That being the case, a passport is not necessary for a closed loop cruise to Cancun. However, a closed loop cruise to South America would necessitate a passport.

Citizens have been screaming at Homeland Security from day one about these new rules, but they are in place to protect everyone. Cancun has always been a location that US citizens could pretty much travel to and from without any hassle. In all honesty, the hassles will remain minimal; there are just some extra security measures in place to make the borders more secure.

In all honesty, while it may not be necessary to have a passport to Cancun, it is still a safe play to get one before any trip happens. A U.S. passport application is the be all and end all of documentation of citizenship and on the off chance that difficulties were encountered coming back into the United States or entering Cancun, the passport is like Willie Wonka’s Golden Ticket.