Somalia, South Sudan, Mali, Central African Republic, Afghanistan, North Korea, Iran, Iraq, Libya, Syria and Yemen are ranked in level-four, where USA tells Citizens " Do not Travel". These locations are known for their drug cartel activity, including trafficking routes and drug-crop cultivation.
A link to an entire breakdown of countries and Mexico by state can be found here.
"While we will issue an overall Travel Advisory level for every country, levels of advice may vary for specific locations or areas within a country", the US Department of State clarified.
India, under the new system, falls in Level 2, which means travellers have to exercise "increased caution" due to "crime and terrorism", the website says. North Korea is the exception to that rule, since the United States banned travel on American passports to that country over the summer.
The MTB said the new system is an improvement based on its organization and simplicity, and noted that the State Department "confirmed that major worldwide tourist destinations in Mexico are safe" and have no travel restrictions.
Level 3 - Reconsider Travel: Avoid travel due to serious risks to safety and security.
The Department of State advises that US citizens not travel to the country or leave as soon as it is safe to do so.
However, the State Department offers no warnings for popular tourist hotspots such as "Guadalajara, Puerto Vallarta, Chapala, and Ajijic".
Most of northern Mexico, including the border states of Chihuahua, Coahuila, Nuevo Leon and Sonora as well as Durango, Zacatecas and San Luis Potosi, are under level 3 warnings. They require a one-time waiver explaining why they need to go.
None of levels prohibits travel.
Tamaulipas has always been riven by turf wars between rival drug cartels, and Sinaloa is home to the cartel of the same name.
The office also mentioned that the USA government was unable to provide any consular services to US citizens from the Consulate General in Peshawar.
The resort town was once a glamorous destination, but in recent years it has had one of the highest murder rates in the country.
And Antarctica? That's a 2 - "exercise increased caution" - for "environmental hazards posed by extreme and unpredictable weather", according to the State Department.
Readers, do you think this new system is an improvement?
Relatives hold up signs with images of some of the 43 missing students of Ayotzinapa College Raul Isidro Burgos as they take part in a march to mark the 29th month anniversary of the disappearance of the students in the state of Guerrero in Mexico City, Mexico February 26, 2017.