Find out which countries are welcoming US tourists back

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Editor's Note — CNN Travel updates this entire article periodically. It was last updated on September 22. The entry on Aruba was updated on September 25. The US State Department advises that travelers consult country-specific travel advisories via their website or consult the CDC's latest guidance. Before you make any international travel plans, check these sites first.

(CNN) — Once one of the world's most powerful travel documents, the might of the US passport has shriveled during the Covid-19 pandemic.

With US coronavirus cases around the 6.6 million mark, many nations continue to view America with trepidation. The European Union has omitted the United States from its list of countries whose tourists may visit. Americans still can't vacation in their neighbor to the north, Canada, nor head to many Asian favorites such as Thailand.

While most US travelers are staying close to home with short-distance car trips, some still want to go abroad. For those people, there are still popular vacation options such as Mexico, Ireland and South Korea. And the list has been slowly growing.

Whether travel to "open" international destinations is responsible or advisable is up to you. It's worth noting that since the pandemic is ongoing, anything can change at any time.

The US Centers for Disease Control and Prevention and the US State Department provide Covid-19 risk assessments by country. The vast majority on the CDC website are deemed "high risk." The State Department categorizes most nations as Level 3, or "reconsider travel."

What follows is a list of countries, in alphabetical order, where it's still possible for US passport holders to go for a vacation.